add composer's vendor directory

vendor/bshaffer/oauth2-server-php/src/OAuth2/OpenID/Storage/AuthorizationCodeInterface.php

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+<?php
+
+namespace OAuth2\OpenID\Storage;
+
+use OAuth2\Storage\AuthorizationCodeInterface as BaseAuthorizationCodeInterface;
+/**
+ * Implement this interface to specify where the OAuth2 Server
+ * should get/save authorization codes for the "Authorization Code"
+ * grant type
+ *
+ * @author Brent Shaffer <bshafs at gmail dot com>
+ */
+interface AuthorizationCodeInterface extends BaseAuthorizationCodeInterface
+{
+    /**
+     * Take the provided authorization code values and store them somewhere.
+     *
+     * This function should be the storage counterpart to getAuthCode().
+     *
+     * If storage fails for some reason, we're not currently checking for
+     * any sort of success/failure, so you should bail out of the script
+     * and provide a descriptive fail message.
+     *
+     * Required for OAuth2::GRANT_TYPE_AUTH_CODE.
+     *
+     * @param $code                authorization code to be stored.
+     * @param $client_id           client identifier to be stored.
+     * @param $user_id             user identifier to be stored.
+     * @param string $redirect_uri redirect URI(s) to be stored in a space-separated string.
+     * @param int    $expires      expiration to be stored as a Unix timestamp.
+     * @param string $scope        OPTIONAL scopes to be stored in space-separated string.
+     * @param string $id_token     OPTIONAL the OpenID Connect id_token.
+     *
+     * @ingroup oauth2_section_4
+     */
+    public function setAuthorizationCode($code, $client_id, $user_id, $redirect_uri, $expires, $scope = null, $id_token = null);
+}

vendor/bshaffer/oauth2-server-php/src/OAuth2/OpenID/Storage/UserClaimsInterface.php

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+<?php
+
+namespace OAuth2\OpenID\Storage;
+
+/**
+ * Implement this interface to specify where the OAuth2 Server
+ * should retrieve user claims for the OpenID Connect id_token.
+ */
+interface UserClaimsInterface
+{
+    // valid scope values to pass into the user claims API call
+    const VALID_CLAIMS = 'profile email address phone';
+
+    // fields returned for the claims above
+    const PROFILE_CLAIM_VALUES  = 'name family_name given_name middle_name nickname preferred_username profile picture website gender birthdate zoneinfo locale updated_at';
+    const EMAIL_CLAIM_VALUES    = 'email email_verified';
+    const ADDRESS_CLAIM_VALUES  = 'formatted street_address locality region postal_code country';
+    const PHONE_CLAIM_VALUES    = 'phone_number phone_number_verified';
+
+    /**
+     * Return claims about the provided user id.
+     *
+     * Groups of claims are returned based on the requested scopes. No group
+     * is required, and no claim is required.
+     *
+     * @param $user_id
+     * The id of the user for which claims should be returned.
+     * @param $scope
+     * The requested scope.
+     * Scopes with matching claims: profile, email, address, phone.
+     *
+     * @return
+     * An array in the claim => value format.
+     *
+     * @see http://openid.net/specs/openid-connect-core-1_0.html#ScopeClaims
+     */
+    public function getUserClaims($user_id, $scope);
+}