Merge branch 'MDL-58898-master' of https://github.com/xow/moodle

[moodle.git] / auth / oauth2 / classes / linked_login.php

diff --git a/auth/oauth2/classes/linked_login.php b/auth/oauth2/classes/linked_login.php
index b49392c..96be2ae 100644 (file)
--- a/auth/oauth2/classes/linked_login.php
+++ b/auth/oauth2/classes/linked_login.php
@@ -65,6 +65,29 @@ class linked_login extends persistent {
         );
     }
 
+    /**
+     * Check whether there are any valid linked accounts for this issuer
+     * and username combination.
+     *
+     * @param \core\oauth2\issuer $issuer The issuer
+     * @param string $username The username to check
+     */
+    public static function has_existing_issuer_match(\core\oauth2\issuer $issuer, $username) {
+        global $DB;
+
+        $where = "issuerid = :issuerid
+              AND username = :username
+              AND (confirmtokenexpires = 0 OR confirmtokenexpires > :maxexpiry)";
+
+        $count = $DB->count_records_select(static::TABLE, $where, [
+            'issuerid' => $issuer->get('id'),
+            'username' => $username,
+            'maxexpiry' => (new \DateTime('NOW'))->getTimestamp(),
+        ]);
+
+        return $count > 0;
+    }
+
     /**
      * Remove all linked logins that are using issuers that have been deleted.
      *