File 0001-Fixed-the-LDAP-authentication-issue-for-the-simultaneous.patch of Package pgadmin4.38248

From fa29ba91632634d961f937ce3ed2c3b5a9d78f59 Mon Sep 17 00:00:00 2001
From: Khushboo Vashi <khushboo.vashi@enterprisedb.com>
Date: Tue, 4 Apr 2023 18:47:13 +0530
Subject: [PATCH] Fixed the LDAP authentication issue for the simultaneous
 login attempts.

---
 web/pgadmin/authenticate/__init__.py | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/web/pgadmin/authenticate/__init__.py b/web/pgadmin/authenticate/__init__.py
index bda9dadbf0d..0d5b429c0df 100644
--- a/web/pgadmin/authenticate/__init__.py
+++ b/web/pgadmin/authenticate/__init__.py
@@ -12,6 +12,7 @@
 from pgadmin.utils.csrf import pgCSRFProtect
 
 from .registry import AuthSourceRegistry
+from threading import Lock
 
 MODULE_NAME = 'authenticate'
 
@@ -35,6 +36,19 @@
     return Response(render_template("browser/kerberos_logout.html",
                                     login_url=url_for('security.login'),
                                     ))
+
+
+class AuthLocker:
+    """Implementing lock while authentication."""
+    lock = Lock()
+
+    def __enter__(self):
+        self.lock.acquire()
+        return self
+
+    def __exit__(self, type, value, traceback):
+        if self.lock.locked():
+            self.lock.release()
 
 
 @blueprint.route('/login', endpoint='login', methods=['GET', 'POST'])
@@ -83,6 +97,14 @@ def login():
     Entry point for all the authentication sources.
     The user input will be validated and authenticated.
     """
+    with AuthLocker():
+        return _login()
+
+
+def _login():
+    """
+    Internal authentication process locked by a mutex.
+    """
     form = _security.login_form()
     auth_obj = AuthSourceManager(form, config.AUTHENTICATION_SOURCES)
     session['_auth_source_manager_obj'] = None