Added support to connect PostgreSQL servers via Kerberos authentication. Fixes #6158

web/pgadmin/authenticate/static/js/kerberos.js

@@ -0,0 +1,59 @@
+import url_for from 'sources/url_for';
+import userInfo from 'pgadmin.user_management.current_user';
+import pgConst from 'pgadmin.browser.constants';
+
+function fetch_ticket() {
+  // Fetch the Kerberos Updated ticket through SPNEGO
+  return fetch(url_for('authenticate.kerberos_update_ticket')
+  )
+    .then(function(response){
+      if (response.status >= 200 && response.status < 300) {
+        return Promise.resolve(response);
+      } else {
+        return Promise.reject(new Error(response.statusText));
+      }
+    });
+}
+
+function fetch_ticket_lifetime () {
+  // Fetch the Kerberos ticket lifetime left
+
+  return fetch(url_for('authenticate.kerberos_validate_ticket')
+  )
+    .then(
+      function(response){
+        if (response.status >= 200 && response.status < 300) {
+          return response.json();
+        } else {
+          return Promise.reject(new Error(response.statusText));
+        }
+      }
+    )
+    .then(function(response){
+      let ticket_lifetime = response.data.ticket_lifetime;
+      if (ticket_lifetime > 0) {
+        return Promise.resolve(ticket_lifetime);
+      } else {
+        return Promise.reject();
+      }
+    });
+
+}
+
+function validate_kerberos_ticket() {
+  // Ping pgAdmin server every 10 seconds
+  // to fetch the Kerberos ticket lifetime left
+  if (userInfo['current_auth_source'] != pgConst['KERBEROS']) return;
+
+  return setInterval(function() {
+    let newPromise = fetch_ticket_lifetime();
+    newPromise.then(
+      function() {
+        return;
+      },
+      fetch_ticket
+    );
+  }, 10000);
+}
+
+export {fetch_ticket, validate_kerberos_ticket, fetch_ticket_lifetime};