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<!DOCTYPE html>
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<h1>
<span translate="no">EpochtalkServer.Auth.Guardian</span>
<small class="app-vsn" translate="no">(epochtalk_server v0.1.0)</small>
</h1>
</div>
<section id="moduledoc">
<p>Guardian provides a singular interface for authentication in Elixir applications
that is <code class="inline">token</code> based.
Tokens should be:</p><ul><li>tamper proof</li><li>include a payload (claims)
JWT tokens (the default) fit this description.
When using Guardian, you'll need an implementation module.<pre><code class="makeup elixir" translate="no"><span class="kd">defmodule</span><span class="w"> </span><span class="nc">MyApp.Guardian</span><span class="w"> </span><span class="k" data-group-id="9979336753-1">do</span><span class="w">
</span><span class="kn">use</span><span class="w"> </span><span class="nc">Guardian</span><span class="p">,</span><span class="w"> </span><span class="ss">otp_app</span><span class="p">:</span><span class="w"> </span><span class="ss">:my_app</span><span class="w">
</span><span class="kd">def</span><span class="w"> </span><span class="nf">subject_for_token</span><span class="p" data-group-id="9979336753-2">(</span><span class="n">resource</span><span class="p">,</span><span class="w"> </span><span class="c">_claims</span><span class="p" data-group-id="9979336753-2">)</span><span class="p">,</span><span class="w"> </span><span class="ss">do</span><span class="p">:</span><span class="w"> </span><span class="p" data-group-id="9979336753-3">{</span><span class="ss">:ok</span><span class="p">,</span><span class="w"> </span><span class="n">to_string</span><span class="p" data-group-id="9979336753-4">(</span><span class="n">resource</span><span class="o">.</span><span class="n">id</span><span class="p" data-group-id="9979336753-4">)</span><span class="p" data-group-id="9979336753-3">}</span><span class="w">
</span><span class="kd">def</span><span class="w"> </span><span class="nf">resource_from_claims</span><span class="p" data-group-id="9979336753-5">(</span><span class="n">claims</span><span class="p" data-group-id="9979336753-5">)</span><span class="w"> </span><span class="k" data-group-id="9979336753-6">do</span><span class="w">
</span><span class="n">find_me_a_resource</span><span class="p" data-group-id="9979336753-7">(</span><span class="n">claims</span><span class="p" data-group-id="9979336753-8">[</span><span class="s">"sub"</span><span class="p" data-group-id="9979336753-8">]</span><span class="p" data-group-id="9979336753-7">)</span><span class="w"> </span><span class="c1"># {:ok, resource} or {:error, reason}</span><span class="w">
</span><span class="k" data-group-id="9979336753-6">end</span><span class="w">
</span><span class="k" data-group-id="9979336753-1">end</span></code></pre>This module is what you will use to interact with tokens in your application.
When you <code class="inline">use</code> Guardian, the <code class="inline">:otp_app</code> option is required.
Any other option provided will be merged with the configuration in the config
files.
The Guardian module contains some generated functions and some callbacks.</li></ul><h2 id="module-generated-functions" class="section-heading">
<a href="#module-generated-functions" class="hover-link">
<i class="ri-link-m" aria-hidden="true"></i>
</a>
<span class="text">Generated functions</span>
</h2>
<h3 id="module-default_token_type" class="section-heading">
<a href="#module-default_token_type" class="hover-link">
<i class="ri-link-m" aria-hidden="true"></i>
</a>
<span class="text"><code class="inline">default_token_type()</code></span>
</h3>
<p>Overridable.
Provides the default token type for the token - <code class="inline">"access"</code>
Token types allow a developer to mark a token as having a particular purpose.
Different types of tokens can then be used specifically in your app.
Types may include (but are not limited to):</p><ul><li><code class="inline">"access"</code></li><li><code class="inline">"refresh"</code>
Access tokens should be short lived and are used to access resources on your API.
Refresh tokens should be longer lived and whose only purpose is to exchange
for a shorter lived access token.
To specify the type of token, use the <code class="inline">:token_type</code> option in
the <code class="inline">encode_and_sign</code> function.
Token type is encoded into the token in the <code class="inline">"typ"</code> field.
Return - a string.</li></ul><h3 id="module-peek-token" class="section-heading">
<a href="#module-peek-token" class="hover-link">
<i class="ri-link-m" aria-hidden="true"></i>
</a>
<span class="text"><code class="inline">peek(token)</code></span>
</h3>
<p>Inspect a tokens payload. Note that this function does no verification.
Return - a map including the <code class="inline">:claims</code> key.</p><h3 id="module-config-config-key-default-nil" class="section-heading">
<a href="#module-config-config-key-default-nil" class="hover-link">
<i class="ri-link-m" aria-hidden="true"></i>
</a>
<span class="text"><code class="inline">config()</code>, <code class="inline">config(key, default \\ nil)</code></span>
</h3>
<p>Without argument <code class="inline">config</code> will return the full configuration Keyword list.
When given a <code class="inline">key</code> and optionally a default, <code class="inline">config</code> will fetch a resolved value
contained in the key.
See <a href="https://hexdocs.pm/guardian/2.3.2/Guardian.Config.html#resolve_value/1"><code class="inline">Guardian.Config.resolve_value/1</code></a></p><h3 id="module-encode_and_sign-resource-claims-opts" class="section-heading">
<a href="#module-encode_and_sign-resource-claims-opts" class="hover-link">
<i class="ri-link-m" aria-hidden="true"></i>
</a>
<span class="text"><code class="inline">encode_and_sign(resource, claims \\ %{}, opts \\ [])</code></span>
</h3>
<p>Creates a signed token.
Arguments:</p><ul><li><code class="inline">resource</code> - The resource to represent in the token (i.e. the user)</li><li><code class="inline">claims</code> - Any custom claims that you want to use in your token</li><li><code class="inline">opts</code> - Options for the token module and callbacks
For more information on options see the documentation for your token module.<pre><code class="makeup elixir" translate="no"><span class="c1"># Provide a token using the defaults including the default_token_type</span><span class="w">
</span><span class="p" data-group-id="7882067622-1">{</span><span class="ss">:ok</span><span class="p">,</span><span class="w"> </span><span class="n">token</span><span class="p">,</span><span class="w"> </span><span class="n">full_claims</span><span class="p" data-group-id="7882067622-1">}</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="nc">MyApp.Guardian</span><span class="o">.</span><span class="n">encode_and_sign</span><span class="p" data-group-id="7882067622-2">(</span><span class="n">user</span><span class="p" data-group-id="7882067622-2">)</span><span class="w">
</span><span class="c1"># Provide a token including custom claims</span><span class="w">
</span><span class="p" data-group-id="7882067622-3">{</span><span class="ss">:ok</span><span class="p">,</span><span class="w"> </span><span class="n">token</span><span class="p">,</span><span class="w"> </span><span class="n">full_claims</span><span class="p" data-group-id="7882067622-3">}</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="nc">MyApp.Guardian</span><span class="o">.</span><span class="n">encode_and_sign</span><span class="p" data-group-id="7882067622-4">(</span><span class="n">user</span><span class="p">,</span><span class="w"> </span><span class="p" data-group-id="7882067622-5">%{</span><span class="ss">some</span><span class="p">:</span><span class="w"> </span><span class="s">"claim"</span><span class="p" data-group-id="7882067622-5">}</span><span class="p" data-group-id="7882067622-4">)</span><span class="w">
</span><span class="c1"># Provide a token including custom claims and a different token type/ttl</span><span class="w">
</span><span class="p" data-group-id="7882067622-6">{</span><span class="ss">:ok</span><span class="p">,</span><span class="w"> </span><span class="n">token</span><span class="p">,</span><span class="w"> </span><span class="n">full_claims</span><span class="p" data-group-id="7882067622-6">}</span><span class="w"> </span><span class="o">=</span><span class="w">
</span><span class="nc">MyApp.Guardian</span><span class="o">.</span><span class="n">encode_and_sign</span><span class="p" data-group-id="7882067622-7">(</span><span class="n">user</span><span class="p">,</span><span class="w"> </span><span class="p" data-group-id="7882067622-8">%{</span><span class="ss">some</span><span class="p">:</span><span class="w"> </span><span class="s">"claim"</span><span class="p" data-group-id="7882067622-8">}</span><span class="p">,</span><span class="w"> </span><span class="ss">token_type</span><span class="p">:</span><span class="w"> </span><span class="s">"refresh"</span><span class="p">,</span><span class="w"> </span><span class="ss">ttl</span><span class="p">:</span><span class="w"> </span><span class="p" data-group-id="7882067622-9">{</span><span class="mi">4</span><span class="p">,</span><span class="w"> </span><span class="ss">:weeks</span><span class="p" data-group-id="7882067622-9">}</span><span class="p" data-group-id="7882067622-7">)</span></code></pre>The <code class="inline">encode_and_sign</code> function calls a number of callbacks on
your implementation module. See <a href="https://hexdocs.pm/guardian/2.3.2/Guardian.html#encode_and_sign/4"><code class="inline">Guardian.encode_and_sign/4</code></a></li></ul><h3 id="module-decode_and_verify-token-claims_to_check-opts" class="section-heading">
<a href="#module-decode_and_verify-token-claims_to_check-opts" class="hover-link">
<i class="ri-link-m" aria-hidden="true"></i>
</a>
<span class="text"><code class="inline">decode_and_verify(token, claims_to_check \\ %{}, opts \\ [])</code></span>
</h3>
<p>Decodes a token and verifies the claims are valid.
Arguments:</p><ul><li><code class="inline">token</code> - The token to decode</li><li><code class="inline">claims_to_check</code> - A map of the literal claims that should be matched. If
any of the claims do not literally match verification fails.</li><li><code class="inline">opts</code> - The options to pass to the token module and callbacks
Callbacks:
<code class="inline">decode_and_verify</code> calls a number of callbacks on your implementation module,
See <a href="https://hexdocs.pm/guardian/2.3.2/Guardian.html#decode_and_verify/4"><code class="inline">Guardian.decode_and_verify/4</code></a><pre><code class="makeup elixir" translate="no"><span class="c1"># Decode and verify using the defaults</span><span class="w">
</span><span class="p" data-group-id="3260181906-1">{</span><span class="ss">:ok</span><span class="p">,</span><span class="w"> </span><span class="n">claims</span><span class="p" data-group-id="3260181906-1">}</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="nc">MyApp.Guardian</span><span class="o">.</span><span class="n">decode_and_verify</span><span class="p" data-group-id="3260181906-2">(</span><span class="n">token</span><span class="p" data-group-id="3260181906-2">)</span><span class="w">
</span><span class="c1"># Decode and verify with literal claims check.</span><span class="w">
</span><span class="c1"># If the claims in the token do not match those given verification will fail</span><span class="w">
</span><span class="p" data-group-id="3260181906-3">{</span><span class="ss">:ok</span><span class="p">,</span><span class="w"> </span><span class="n">claims</span><span class="p" data-group-id="3260181906-3">}</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="nc">MyApp.Guardian</span><span class="o">.</span><span class="n">decode_and_verify</span><span class="p" data-group-id="3260181906-4">(</span><span class="n">token</span><span class="p">,</span><span class="w"> </span><span class="p" data-group-id="3260181906-5">%{</span><span class="ss">match</span><span class="p">:</span><span class="w"> </span><span class="s">"claim"</span><span class="p" data-group-id="3260181906-5">}</span><span class="p" data-group-id="3260181906-4">)</span><span class="w">
</span><span class="c1"># Decode and verify with literal claims check and options.</span><span class="w">
</span><span class="c1"># Options are passed to your token module and callbacks</span><span class="w">
</span><span class="p" data-group-id="3260181906-6">{</span><span class="ss">:ok</span><span class="p">,</span><span class="w"> </span><span class="n">claims</span><span class="p" data-group-id="3260181906-6">}</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="nc">MyApp.Guardian</span><span class="o">.</span><span class="n">decode_and_verify</span><span class="p" data-group-id="3260181906-7">(</span><span class="n">token</span><span class="p">,</span><span class="w"> </span><span class="p" data-group-id="3260181906-8">%{</span><span class="ss">match</span><span class="p">:</span><span class="w"> </span><span class="s">"claim"</span><span class="p" data-group-id="3260181906-8">}</span><span class="p">,</span><span class="w"> </span><span class="ss">some</span><span class="p">:</span><span class="w"> </span><span class="s">"secret"</span><span class="p" data-group-id="3260181906-7">)</span></code></pre></li></ul><h3 id="module-revoke-token-opts" class="section-heading">
<a href="#module-revoke-token-opts" class="hover-link">
<i class="ri-link-m" aria-hidden="true"></i>
</a>
<span class="text"><code class="inline">revoke(token, opts \\ [])</code></span>
</h3>
<p>Revoke a token.
<em>Note:</em> this is entirely dependent on your token module and implementation
callbacks.</p><pre><code class="makeup elixir" translate="no"><span class="p" data-group-id="4872182434-1">{</span><span class="ss">:ok</span><span class="p">,</span><span class="w"> </span><span class="n">claims</span><span class="p" data-group-id="4872182434-1">}</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="nc">MyApp.Guardian</span><span class="o">.</span><span class="n">revoke</span><span class="p" data-group-id="4872182434-2">(</span><span class="n">token</span><span class="p">,</span><span class="w"> </span><span class="ss">some</span><span class="p">:</span><span class="w"> </span><span class="s">"option"</span><span class="p" data-group-id="4872182434-2">)</span></code></pre><h3 id="module-refresh-token-opts" class="section-heading">
<a href="#module-refresh-token-opts" class="hover-link">
<i class="ri-link-m" aria-hidden="true"></i>
</a>
<span class="text">refresh(token, opts \ [])</span>
</h3>
<p>Refreshes the time on a token. This is used to re-issue a token with
essentially the same claims but with a different expiry.
Tokens are verified before performing the refresh to ensure
only valid tokens may be refreshed.
Arguments:</p><ul><li><code class="inline">token</code> - The old token to refresh</li><li><code class="inline">opts</code> - Options to pass to the Implementation Module and callbacks
Options:</li><li><code class="inline">:ttl</code> - The new ttl. If not specified the default will be used.<pre><code class="makeup elixir" translate="no"><span class="p" data-group-id="2107173905-1">{</span><span class="ss">:ok</span><span class="p">,</span><span class="w"> </span><span class="p" data-group-id="2107173905-2">{</span><span class="n">old_token</span><span class="p">,</span><span class="w"> </span><span class="n">old_claims</span><span class="p" data-group-id="2107173905-2">}</span><span class="p">,</span><span class="w"> </span><span class="p" data-group-id="2107173905-3">{</span><span class="n">new_token</span><span class="p">,</span><span class="w"> </span><span class="n">new_claims</span><span class="p" data-group-id="2107173905-3">}</span><span class="p" data-group-id="2107173905-1">}</span><span class="w"> </span><span class="o">=</span><span class="w">
</span><span class="nc">MyApp.Guardian</span><span class="o">.</span><span class="n">refresh</span><span class="p" data-group-id="2107173905-4">(</span><span class="n">old_token</span><span class="p">,</span><span class="w"> </span><span class="ss">ttl</span><span class="p">:</span><span class="w"> </span><span class="p" data-group-id="2107173905-5">{</span><span class="mi">1</span><span class="p">,</span><span class="w"> </span><span class="ss">:hour</span><span class="p" data-group-id="2107173905-5">}</span><span class="p" data-group-id="2107173905-4">)</span></code></pre>See <code class="inline">Guardian.refresh</code></li></ul><h3 id="module-exchange-old_token-from_type-to_type-options" class="section-heading">
<a href="#module-exchange-old_token-from_type-to_type-options" class="hover-link">
<i class="ri-link-m" aria-hidden="true"></i>
</a>
<span class="text"><code class="inline">exchange(old_token, from_type, to_type, options)</code></span>
</h3>
<p>Exchanges one token for another of a different type.
Especially useful to trade in a <code class="inline">refresh</code> token for an <code class="inline">access</code> one.
Tokens are verified before performing the exchange to ensure that
only valid tokens may be exchanged.
Arguments:</p><ul><li><code class="inline">old_token</code> - The existing token you wish to exchange.</li><li><code class="inline">from_type</code> - The type the old token must be. Can be given a list of types.</li><li><code class="inline">to_type</code> - The new type of token that you want back.</li><li><code class="inline">options</code> - The options to pass to the token module and callbacks.
Options:
Options may be used by your token module or callbacks.</li><li><code class="inline">ttl</code> - The ttl for the new token
See <code class="inline">Guardian.exchange</code></li></ul><p><strong>Note:</strong> Copied from <a href="https://github.com/ueberauth/guardian">Guardian Docs</a></p>
</section>
</div>
<section id="summary" class="details-list">
<h1 class="section-heading">
<a class="hover-link" href="#summary">
<i class="ri-link-m" aria-hidden="true"></i>
</a>
<span class="text">Summary</span>
</h1>
<div class="summary-functions summary">
<h2>
<a href="#functions">Functions</a>
</h2>
<div class="summary-row">
<div class="summary-signature">
<a href="#after_encode_and_sign/4" data-no-tooltip="" translate="no">after_encode_and_sign(resource, claims, token, arg4)</a>
</div>
<div class="summary-synopsis"><p>An optional callback invoked after the token has been generated
and signed.</p></div>
</div>
<div class="summary-row">
<div class="summary-signature">
<a href="#after_sign_in/5" data-no-tooltip="" translate="no">after_sign_in(conn, r, t, c, o)</a>
</div>
<div class="summary-synopsis"><p>Callback implementation for <a href="https://hexdocs.pm/guardian/2.3.2/Guardian.html#c:after_sign_in/5"><code class="inline">Guardian.after_sign_in/5</code></a>.</p></div>
</div>
<div class="summary-row">
<div class="summary-signature">
<a href="#before_sign_out/3" data-no-tooltip="" translate="no">before_sign_out(conn, location, opts)</a>
</div>
<div class="summary-synopsis"><p>Callback implementation for <a href="https://hexdocs.pm/guardian/2.3.2/Guardian.html#c:before_sign_out/3"><code class="inline">Guardian.before_sign_out/3</code></a>.</p></div>
</div>
<div class="summary-row">
<div class="summary-signature">
<a href="#build_claims/3" data-no-tooltip="" translate="no">build_claims(c, _, _)</a>
</div>
<div class="summary-synopsis"><p>Callback implementation for <a href="https://hexdocs.pm/guardian/2.3.2/Guardian.html#c:build_claims/3"><code class="inline">Guardian.build_claims/3</code></a>.</p></div>
</div>
<div class="summary-row">
<div class="summary-signature">
<a href="#config/0" data-no-tooltip="" translate="no">config()</a>
</div>
<div class="summary-synopsis"><p>Fetches the configuration for this module.</p></div>
</div>
<div class="summary-row">
<div class="summary-signature">
<a href="#config/2" data-no-tooltip="" translate="no">config(key, default \\ nil)</a>
</div>
<div class="summary-synopsis"><p>Returns a resolved value of the configuration found at a key.</p></div>
</div>
<div class="summary-row">
<div class="summary-signature">
<a href="#decode_and_verify/3" data-no-tooltip="" translate="no">decode_and_verify(token, claims_to_check \\ %{}, opts \\ [])</a>
</div>
<div class="summary-synopsis"><p>Decodes and verifies a token using the configuration on the implementation
module.</p></div>
</div>
<div class="summary-row">
<div class="summary-signature">
<a href="#default_token_type/0" data-no-tooltip="" translate="no">default_token_type()</a>
</div>
<div class="summary-synopsis"><p>The default type of token for this module.</p></div>
</div>
<div class="summary-row">
<div class="summary-signature">
<a href="#encode_and_sign/3" data-no-tooltip="" translate="no">encode_and_sign(resource, claims \\ %{}, opts \\ [])</a>
</div>
<div class="summary-synopsis"><p>Encodes the claims.</p></div>
</div>
<div class="summary-row">
<div class="summary-signature">
<a href="#exchange/4" data-no-tooltip="" translate="no">exchange(token, from_type, to_type, opts \\ [])</a>
</div>
<div class="summary-synopsis"><p>Exchanges a token of one type for another.</p></div>
</div>
<div class="summary-row">
<div class="summary-signature">
<a href="#on_exchange/3" data-no-tooltip="" translate="no">on_exchange(old_stuff, new_stuff, options)</a>
</div>
<div class="summary-synopsis"><p>Callback implementation for <a href="https://hexdocs.pm/guardian/2.3.2/Guardian.html#c:on_exchange/3"><code class="inline">Guardian.on_exchange/3</code></a>.</p></div>
</div>
<div class="summary-row">
<div class="summary-signature">
<a href="#on_refresh/3" data-no-tooltip="" translate="no">on_refresh(old_stuff, new_stuff, options)</a>
</div>
<div class="summary-synopsis"><p>An optional callback invoked when a token is refreshed.</p></div>
</div>
<div class="summary-row">
<div class="summary-signature">
<a href="#on_revoke/3" data-no-tooltip="" translate="no">on_revoke(claims, token, options)</a>
</div>
<div class="summary-synopsis"><p>An optional callback invoked when a token is revoked.</p></div>
</div>
<div class="summary-row">
<div class="summary-signature">
<a href="#on_verify/3" data-no-tooltip="" translate="no">on_verify(claims, token, options)</a>
</div>
<div class="summary-synopsis"><p>An optional callback invoked after the claims have been validated.</p></div>
</div>
<div class="summary-row">
<div class="summary-signature">
<a href="#peek/1" data-no-tooltip="" translate="no">peek(token)</a>
</div>
<div class="summary-synopsis"><p>Provides the content of the token but without verification
of either the claims or the signature.</p></div>
</div>
<div class="summary-row">
<div class="summary-signature">
<a href="#refresh/2" data-no-tooltip="" translate="no">refresh(old_token, opts \\ [])</a>
</div>
<div class="summary-synopsis"><p>Refresh a token.</p></div>
</div>
<div class="summary-row">
<div class="summary-signature">
<a href="#resource_from_claims/1" data-no-tooltip="" translate="no">resource_from_claims(claims)</a>
</div>
<div class="summary-synopsis"><p>Fetches the resource that is represented by claims.
For JWT this would normally be found in the <code class="inline">sub</code> field.</p></div>
</div>
<div class="summary-row">
<div class="summary-signature">
<a href="#resource_from_token/3" data-no-tooltip="" translate="no">resource_from_token(token, claims_to_check \\ %{}, opts \\ [])</a>
</div>
<div class="summary-synopsis"><p>Fetch the resource and claims directly from a token.</p></div>
</div>
<div class="summary-row">
<div class="summary-signature">
<a href="#revoke/2" data-no-tooltip="" translate="no">revoke(token, opts \\ [])</a>
</div>
<div class="summary-synopsis"><p>Revoke a token.</p></div>
</div>
<div class="summary-row">
<div class="summary-signature">
<a href="#sliding_cookie/3" data-no-tooltip="" translate="no">sliding_cookie(current_claims, current_resource, opts \\ [])</a>
</div>
<div class="summary-synopsis"><p>If Guardian.Plug.SlidingCookie is used, this callback will be invoked to
return the new claims, or an error (which will mean the cookie will not
be refreshed).</p></div>
</div>
<div class="summary-row">
<div class="summary-signature">
<a href="#subject_for_token/2" data-no-tooltip="" translate="no">subject_for_token(arg1, arg2)</a>
</div>
<div class="summary-synopsis"><p>Fetches the subject for a token for the provided resource and claims
The subject should be a short identifier that can be used to identify
the resource.</p></div>
</div>
<div class="summary-row">
<div class="summary-signature">
<a href="#verify_claims/2" data-no-tooltip="" translate="no">verify_claims(claims, options)</a>
</div>
<div class="summary-synopsis"><p>Callback implementation for <a href="https://hexdocs.pm/guardian/2.3.2/Guardian.html#c:verify_claims/2"><code class="inline">Guardian.verify_claims/2</code></a>.</p></div>
</div>
</div>
</section>
<section id="functions" class="details-list">
<h1 class="section-heading">
<a class="hover-link" href="#functions">
<i class="ri-link-m" aria-hidden="true"></i>
</a>
<span class="text">Functions</span>
</h1>
<div class="functions-list">
<section class="detail" id="after_encode_and_sign/4">
<div class="detail-header">
<a href="#after_encode_and_sign/4" class="detail-link" data-no-tooltip="" aria-label="Link to this function">
<i class="ri-link-m" aria-hidden="true"></i>
</a>
<div class="heading-with-actions">
<h1 class="signature" translate="no">after_encode_and_sign(resource, claims, token, arg4)</h1>
</div>
</div>
<section class="docstring">
<p>An optional callback invoked after the token has been generated
and signed.</p>
</section>
</section>
<section class="detail" id="after_sign_in/5">
<div class="detail-header">
<a href="#after_sign_in/5" class="detail-link" data-no-tooltip="" aria-label="Link to this function">
<i class="ri-link-m" aria-hidden="true"></i>
</a>
<div class="heading-with-actions">
<h1 class="signature" translate="no">after_sign_in(conn, r, t, c, o)</h1>
</div>
</div>
<section class="docstring">
<p>Callback implementation for <a href="https://hexdocs.pm/guardian/2.3.2/Guardian.html#c:after_sign_in/5"><code class="inline">Guardian.after_sign_in/5</code></a>.</p>
</section>
</section>
<section class="detail" id="before_sign_out/3">
<div class="detail-header">
<a href="#before_sign_out/3" class="detail-link" data-no-tooltip="" aria-label="Link to this function">
<i class="ri-link-m" aria-hidden="true"></i>
</a>
<div class="heading-with-actions">
<h1 class="signature" translate="no">before_sign_out(conn, location, opts)</h1>
</div>
</div>
<section class="docstring">
<p>Callback implementation for <a href="https://hexdocs.pm/guardian/2.3.2/Guardian.html#c:before_sign_out/3"><code class="inline">Guardian.before_sign_out/3</code></a>.</p>
</section>
</section>
<section class="detail" id="build_claims/3">
<div class="detail-header">
<a href="#build_claims/3" class="detail-link" data-no-tooltip="" aria-label="Link to this function">
<i class="ri-link-m" aria-hidden="true"></i>
</a>
<div class="heading-with-actions">
<h1 class="signature" translate="no">build_claims(c, _, _)</h1>
</div>
</div>
<section class="docstring">
<p>Callback implementation for <a href="https://hexdocs.pm/guardian/2.3.2/Guardian.html#c:build_claims/3"><code class="inline">Guardian.build_claims/3</code></a>.</p>
</section>
</section>
<section class="detail" id="config/0">
<div class="detail-header">
<a href="#config/0" class="detail-link" data-no-tooltip="" aria-label="Link to this function">
<i class="ri-link-m" aria-hidden="true"></i>
</a>
<div class="heading-with-actions">
<h1 class="signature" translate="no">config()</h1>
</div>
</div>
<section class="docstring">
<div class="specs">
<pre translate="no"><span class="attribute">@spec</span> config() :: <a href="https://hexdocs.pm/elixir/Keyword.html#t:t/0">Keyword.t</a>()</pre>
</div>
<p>Fetches the configuration for this module.</p>
</section>
</section>
<section class="detail" id="config/2">
<span id="config/1"></span>
<div class="detail-header">
<a href="#config/2" class="detail-link" data-no-tooltip="" aria-label="Link to this function">
<i class="ri-link-m" aria-hidden="true"></i>
</a>
<div class="heading-with-actions">
<h1 class="signature" translate="no">config(key, default \\ nil)</h1>
</div>
</div>
<section class="docstring">
<div class="specs">
<pre translate="no"><span class="attribute">@spec</span> config(<a href="https://hexdocs.pm/elixir/typespecs.html#basic-types">atom</a>() | <a href="https://hexdocs.pm/elixir/String.html#t:t/0">String.t</a>(), <a href="https://hexdocs.pm/elixir/typespecs.html#basic-types">any</a>()) :: <a href="https://hexdocs.pm/elixir/typespecs.html#basic-types">any</a>()</pre>
</div>
<p>Returns a resolved value of the configuration found at a key.</p><p>See <a href="https://hexdocs.pm/guardian/2.3.2/Guardian.Config.html#resolve_value/1"><code class="inline">Guardian.Config.resolve_value/1</code></a>.</p>
</section>
</section>
<section class="detail" id="decode_and_verify/3">
<span id="decode_and_verify/1"></span>
<span id="decode_and_verify/2"></span>
<div class="detail-header">
<a href="#decode_and_verify/3" class="detail-link" data-no-tooltip="" aria-label="Link to this function">
<i class="ri-link-m" aria-hidden="true"></i>
</a>
<div class="heading-with-actions">
<h1 class="signature" translate="no">decode_and_verify(token, claims_to_check \\ %{}, opts \\ [])</h1>
</div>
</div>
<section class="docstring">
<div class="specs">
<pre translate="no"><span class="attribute">@spec</span> decode_and_verify(
<a href="https://hexdocs.pm/guardian/2.3.2/Guardian.Token.html#t:token/0">Guardian.Token.token</a>(),
<a href="https://hexdocs.pm/guardian/2.3.2/Guardian.Token.html#t:claims/0">Guardian.Token.claims</a>(),
<a href="https://hexdocs.pm/guardian/2.3.2/Guardian.html#t:options/0">Guardian.options</a>()
) ::
{:ok, <a href="https://hexdocs.pm/guardian/2.3.2/Guardian.Token.html#t:claims/0">Guardian.Token.claims</a>()} | {:error, <a href="https://hexdocs.pm/elixir/typespecs.html#basic-types">any</a>()}</pre>
</div>
<p>Decodes and verifies a token using the configuration on the implementation
module.</p><p>See <a href="https://hexdocs.pm/guardian/2.3.2/Guardian.html#decode_and_verify/4"><code class="inline">Guardian.decode_and_verify/4</code></a>.</p>
</section>
</section>
<section class="detail" id="default_token_type/0">
<div class="detail-header">
<a href="#default_token_type/0" class="detail-link" data-no-tooltip="" aria-label="Link to this function">
<i class="ri-link-m" aria-hidden="true"></i>
</a>
<div class="heading-with-actions">
<h1 class="signature" translate="no">default_token_type()</h1>
</div>
</div>
<section class="docstring">
<div class="specs">
<pre translate="no"><span class="attribute">@spec</span> default_token_type() :: <a href="https://hexdocs.pm/elixir/String.html#t:t/0">String.t</a>()</pre>
</div>
<p>The default type of token for this module.</p>
</section>
</section>
<section class="detail" id="encode_and_sign/3">
<span id="encode_and_sign/1"></span>
<span id="encode_and_sign/2"></span>
<div class="detail-header">
<a href="#encode_and_sign/3" class="detail-link" data-no-tooltip="" aria-label="Link to this function">
<i class="ri-link-m" aria-hidden="true"></i>
</a>
<div class="heading-with-actions">
<h1 class="signature" translate="no">encode_and_sign(resource, claims \\ %{}, opts \\ [])</h1>
</div>
</div>
<section class="docstring">
<div class="specs">
<pre translate="no"><span class="attribute">@spec</span> encode_and_sign(<a href="https://hexdocs.pm/elixir/typespecs.html#basic-types">any</a>(), <a href="https://hexdocs.pm/guardian/2.3.2/Guardian.Token.html#t:claims/0">Guardian.Token.claims</a>(), <a href="https://hexdocs.pm/guardian/2.3.2/Guardian.html#t:options/0">Guardian.options</a>()) ::
{:ok, <a href="https://hexdocs.pm/guardian/2.3.2/Guardian.Token.html#t:token/0">Guardian.Token.token</a>(), <a href="https://hexdocs.pm/guardian/2.3.2/Guardian.Token.html#t:claims/0">Guardian.Token.claims</a>()} | {:error, <a href="https://hexdocs.pm/elixir/typespecs.html#basic-types">any</a>()}</pre>
</div>
<p>Encodes the claims.</p><p>See <a href="https://hexdocs.pm/guardian/2.3.2/Guardian.html#encode_and_sign/4"><code class="inline">Guardian.encode_and_sign/4</code></a> for more information.</p>
</section>
</section>
<section class="detail" id="exchange/4">
<span id="exchange/3"></span>
<div class="detail-header">
<a href="#exchange/4" class="detail-link" data-no-tooltip="" aria-label="Link to this function">
<i class="ri-link-m" aria-hidden="true"></i>
</a>
<div class="heading-with-actions">
<h1 class="signature" translate="no">exchange(token, from_type, to_type, opts \\ [])</h1>
</div>
</div>
<section class="docstring">
<div class="specs">
<pre translate="no"><span class="attribute">@spec</span> exchange(
token :: <a href="https://hexdocs.pm/guardian/2.3.2/Guardian.Token.html#t:token/0">Guardian.Token.token</a>(),
from_type :: <a href="https://hexdocs.pm/elixir/String.html#t:t/0">String.t</a>() | [<a href="https://hexdocs.pm/elixir/String.html#t:t/0">String.t</a>(), ...],
to_type :: <a href="https://hexdocs.pm/elixir/String.html#t:t/0">String.t</a>(),
options :: <a href="https://hexdocs.pm/guardian/2.3.2/Guardian.html#t:options/0">Guardian.options</a>()
) ::
{:ok, {<a href="https://hexdocs.pm/guardian/2.3.2/Guardian.Token.html#t:token/0">Guardian.Token.token</a>(), <a href="https://hexdocs.pm/guardian/2.3.2/Guardian.Token.html#t:claims/0">Guardian.Token.claims</a>()},
{<a href="https://hexdocs.pm/guardian/2.3.2/Guardian.Token.html#t:token/0">Guardian.Token.token</a>(), <a href="https://hexdocs.pm/guardian/2.3.2/Guardian.Token.html#t:claims/0">Guardian.Token.claims</a>()}}
| {:error, <a href="https://hexdocs.pm/elixir/typespecs.html#basic-types">any</a>()}</pre>
</div>
<p>Exchanges a token of one type for another.</p><p>See <code class="inline">Guardian.exchange</code> for more information.</p>
</section>
</section>
<section class="detail" id="on_exchange/3">
<div class="detail-header">
<a href="#on_exchange/3" class="detail-link" data-no-tooltip="" aria-label="Link to this function">
<i class="ri-link-m" aria-hidden="true"></i>
</a>
<div class="heading-with-actions">
<h1 class="signature" translate="no">on_exchange(old_stuff, new_stuff, options)</h1>
</div>
</div>
<section class="docstring">
<p>Callback implementation for <a href="https://hexdocs.pm/guardian/2.3.2/Guardian.html#c:on_exchange/3"><code class="inline">Guardian.on_exchange/3</code></a>.</p>
</section>
</section>
<section class="detail" id="on_refresh/3">
<div class="detail-header">
<a href="#on_refresh/3" class="detail-link" data-no-tooltip="" aria-label="Link to this function">
<i class="ri-link-m" aria-hidden="true"></i>
</a>
<div class="heading-with-actions">
<h1 class="signature" translate="no">on_refresh(old_stuff, new_stuff, options)</h1>
</div>
</div>
<section class="docstring">
<p>An optional callback invoked when a token is refreshed.</p>
</section>
</section>
<section class="detail" id="on_revoke/3">
<div class="detail-header">
<a href="#on_revoke/3" class="detail-link" data-no-tooltip="" aria-label="Link to this function">
<i class="ri-link-m" aria-hidden="true"></i>
</a>
<div class="heading-with-actions">
<h1 class="signature" translate="no">on_revoke(claims, token, options)</h1>
</div>
</div>
<section class="docstring">
<p>An optional callback invoked when a token is revoked.</p>
</section>
</section>
<section class="detail" id="on_verify/3">
<div class="detail-header">
<a href="#on_verify/3" class="detail-link" data-no-tooltip="" aria-label="Link to this function">
<i class="ri-link-m" aria-hidden="true"></i>
</a>
<div class="heading-with-actions">
<h1 class="signature" translate="no">on_verify(claims, token, options)</h1>
</div>
</div>
<section class="docstring">
<p>An optional callback invoked after the claims have been validated.</p>
</section>
</section>
<section class="detail" id="peek/1">
<div class="detail-header">
<a href="#peek/1" class="detail-link" data-no-tooltip="" aria-label="Link to this function">
<i class="ri-link-m" aria-hidden="true"></i>
</a>
<div class="heading-with-actions">
<h1 class="signature" translate="no">peek(token)</h1>
</div>
</div>
<section class="docstring">
<div class="specs">
<pre translate="no"><span class="attribute">@spec</span> peek(<a href="https://hexdocs.pm/elixir/String.html#t:t/0">String.t</a>()) :: <a href="https://hexdocs.pm/elixir/typespecs.html#basic-types">map</a>()</pre>
</div>
<p>Provides the content of the token but without verification
of either the claims or the signature.</p><p>Claims will be present at the <code class="inline">:claims</code> key.</p><p>See <a href="https://hexdocs.pm/guardian/2.3.2/Guardian.html#peek/2"><code class="inline">Guardian.peek/2</code></a> for more information.</p>
</section>
</section>
<section class="detail" id="refresh/2">
<span id="refresh/1"></span>
<div class="detail-header">
<a href="#refresh/2" class="detail-link" data-no-tooltip="" aria-label="Link to this function">
<i class="ri-link-m" aria-hidden="true"></i>
</a>
<div class="heading-with-actions">
<h1 class="signature" translate="no">refresh(old_token, opts \\ [])</h1>
</div>
</div>
<section class="docstring">
<div class="specs">
<pre translate="no"><span class="attribute">@spec</span> refresh(<a href="https://hexdocs.pm/guardian/2.3.2/Guardian.Token.html#t:token/0">Guardian.Token.token</a>(), <a href="https://hexdocs.pm/guardian/2.3.2/Guardian.html#t:options/0">Guardian.options</a>()) ::
{:ok, {<a href="https://hexdocs.pm/guardian/2.3.2/Guardian.Token.html#t:token/0">Guardian.Token.token</a>(), <a href="https://hexdocs.pm/guardian/2.3.2/Guardian.Token.html#t:claims/0">Guardian.Token.claims</a>()},
{<a href="https://hexdocs.pm/guardian/2.3.2/Guardian.Token.html#t:token/0">Guardian.Token.token</a>(), <a href="https://hexdocs.pm/guardian/2.3.2/Guardian.Token.html#t:claims/0">Guardian.Token.claims</a>()}}
| {:error, <a href="https://hexdocs.pm/elixir/typespecs.html#basic-types">any</a>()}</pre>
</div>
<p>Refresh a token.</p><p>See <code class="inline">Guardian.refresh</code> for more information.</p>
</section>
</section>
<section class="detail" id="resource_from_claims/1">
<div class="detail-header">
<a href="#resource_from_claims/1" class="detail-link" data-no-tooltip="" aria-label="Link to this function">
<i class="ri-link-m" aria-hidden="true"></i>
</a>
<div class="heading-with-actions">
<h1 class="signature" translate="no">resource_from_claims(claims)</h1>
</div>
</div>
<section class="docstring">
<p>Fetches the resource that is represented by claims.
For JWT this would normally be found in the <code class="inline">sub</code> field.</p>
</section>
</section>
<section class="detail" id="resource_from_token/3">
<span id="resource_from_token/1"></span>
<span id="resource_from_token/2"></span>
<div class="detail-header">
<a href="#resource_from_token/3" class="detail-link" data-no-tooltip="" aria-label="Link to this function">
<i class="ri-link-m" aria-hidden="true"></i>
</a>
<div class="heading-with-actions">
<h1 class="signature" translate="no">resource_from_token(token, claims_to_check \\ %{}, opts \\ [])</h1>
</div>
</div>
<section class="docstring">
<div class="specs">
<pre translate="no"><span class="attribute">@spec</span> resource_from_token(
token :: <a href="https://hexdocs.pm/guardian/2.3.2/Guardian.Token.html#t:token/0">Guardian.Token.token</a>(),
claims_to_check :: <a href="https://hexdocs.pm/guardian/2.3.2/Guardian.Token.html#t:claims/0">Guardian.Token.claims</a>() | nil,
opts :: <a href="https://hexdocs.pm/guardian/2.3.2/Guardian.html#t:options/0">Guardian.options</a>()
) :: {:ok, <a href="https://hexdocs.pm/guardian/2.3.2/Guardian.Token.html#t:resource/0">Guardian.Token.resource</a>(), <a href="https://hexdocs.pm/guardian/2.3.2/Guardian.Token.html#t:claims/0">Guardian.Token.claims</a>()} | {:error, <a href="https://hexdocs.pm/elixir/typespecs.html#basic-types">any</a>()}</pre>
</div>
<p>Fetch the resource and claims directly from a token.</p><p>See <code class="inline">Guardian.resource_from_token</code> for more information.</p>
</section>
</section>
<section class="detail" id="revoke/2">
<span id="revoke/1"></span>
<div class="detail-header">
<a href="#revoke/2" class="detail-link" data-no-tooltip="" aria-label="Link to this function">
<i class="ri-link-m" aria-hidden="true"></i>
</a>
<div class="heading-with-actions">
<h1 class="signature" translate="no">revoke(token, opts \\ [])</h1>
</div>
</div>
<section class="docstring">
<div class="specs">
<pre translate="no"><span class="attribute">@spec</span> revoke(<a href="https://hexdocs.pm/guardian/2.3.2/Guardian.Token.html#t:token/0">Guardian.Token.token</a>(), <a href="https://hexdocs.pm/guardian/2.3.2/Guardian.html#t:options/0">Guardian.options</a>()) ::
{:ok, <a href="https://hexdocs.pm/guardian/2.3.2/Guardian.Token.html#t:claims/0">Guardian.Token.claims</a>()} | {:error, <a href="https://hexdocs.pm/elixir/typespecs.html#basic-types">any</a>()}</pre>
</div>
<p>Revoke a token.</p><p>See <code class="inline">Guardian.revoke</code> for more information.</p>
</section>
</section>
<section class="detail" id="sliding_cookie/3">
<span id="sliding_cookie/2"></span>
<div class="detail-header">
<a href="#sliding_cookie/3" class="detail-link" data-no-tooltip="" aria-label="Link to this function">
<i class="ri-link-m" aria-hidden="true"></i>
</a>
<div class="heading-with-actions">
<h1 class="signature" translate="no">sliding_cookie(current_claims, current_resource, opts \\ [])</h1>
</div>
</div>
<section class="docstring">
<div class="specs">
<pre translate="no"><span class="attribute">@spec</span> sliding_cookie(
current_claims :: <a href="https://hexdocs.pm/guardian/2.3.2/Guardian.Token.html#t:claims/0">Guardian.Token.claims</a>(),
current_resource :: <a href="https://hexdocs.pm/guardian/2.3.2/Guardian.Token.html#t:resource/0">Guardian.Token.resource</a>(),
options :: <a href="https://hexdocs.pm/guardian/2.3.2/Guardian.html#t:options/0">Guardian.options</a>()
) :: {:ok, new_claims :: <a href="https://hexdocs.pm/guardian/2.3.2/Guardian.Token.html#t:claims/0">Guardian.Token.claims</a>()} | {:error, <a href="https://hexdocs.pm/elixir/typespecs.html#basic-types">any</a>()}</pre>
</div>
<p>If Guardian.Plug.SlidingCookie is used, this callback will be invoked to
return the new claims, or an error (which will mean the cookie will not
be refreshed).</p>
</section>
</section>
<section class="detail" id="subject_for_token/2">
<div class="detail-header">
<a href="#subject_for_token/2" class="detail-link" data-no-tooltip="" aria-label="Link to this function">
<i class="ri-link-m" aria-hidden="true"></i>
</a>
<div class="heading-with-actions">
<h1 class="signature" translate="no">subject_for_token(arg1, arg2)</h1>
</div>
</div>
<section class="docstring">
<p>Fetches the subject for a token for the provided resource and claims
The subject should be a short identifier that can be used to identify
the resource.</p>
</section>
</section>
<section class="detail" id="verify_claims/2">
<div class="detail-header">
<a href="#verify_claims/2" class="detail-link" data-no-tooltip="" aria-label="Link to this function">
<i class="ri-link-m" aria-hidden="true"></i>
</a>
<div class="heading-with-actions">
<h1 class="signature" translate="no">verify_claims(claims, options)</h1>
</div>
</div>
<section class="docstring">
<p>Callback implementation for <a href="https://hexdocs.pm/guardian/2.3.2/Guardian.html#c:verify_claims/2"><code class="inline">Guardian.verify_claims/2</code></a>.</p>
</section>
</section>
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