--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/issues/extensions/templating.py	Sat Aug 28 21:03:39 2021 -0400
@@ -0,0 +1,104 @@
+import logging
+logger = logging.getLogger('extension')
+
+import sys
+from roundup import __version__ as roundup_version
+def AboutPage(db):
+    "report useful info about this tracker"
+
+    def is_module_loaded(module):
+        modules = sys.modules.keys()
+        return module in modules
+
+    def get_status_of_module(module, prefix=None, version=True):
+        modules = sys.modules.keys()
+        is_enabled = module in modules
+        if is_enabled:
+            if module == 'pyme':
+                from pyme import version
+                version="version %s"%version.versionstr
+            elif module == 'pychart':
+                from pychart import version
+                version="version %s"%version.version
+            elif module == 'sqlite3':
+                from sqlite3 import version
+                version="version %s"%version
+            else:
+                if version:
+                    m = __import__(module)
+                    try:
+                        version="version %s"%m.__version__
+                    except AttributeError:
+                        version="version unavailable - exception thrown"
+                else:
+                    version="version unavailable"
+
+            if prefix:
+                return "%s %s %s enabled: %s"%(prefix, module, version, is_enabled)
+            else:
+                return "Module: %s %s enabled: %s"%(module, version, is_enabled)
+        else:
+            if prefix:
+                return "%s %s enabled: %s"%(prefix, module, is_enabled)
+            else:
+                return "Module: %s enabled: %s"%(module, is_enabled)
+
+    info = []
+
+    info.append("Tracker name: %s<br>"%db.config['TRACKER_NAME'])
+
+    info.append("<h2>Operating environment</h2>")
+    info.append('<a href="http://roundup.sourceforge.net/">Roundup</a> version: %s<br>'%roundup_version)
+    info.append("Python Version: %s<br>"%sys.version)
+
+    info.append("<h2>Configuration</h2>")
+
+    backend = db.config['RDBMS_BACKEND']
+    info.append("Roundup backend: %s<br>"%backend)
+    if backend != 'anydbm':
+        info.append("Roundup db cache: %s<br>"%db.config['RDBMS_CACHE_SIZE'])
+        info.append("Roundup isolation_level: %s<br>"%db.config['RDBMS_ISOLATION_LEVEL'])
+
+    info.append("Roundup template: %s<br>"%db.config['TEMPLATE_ENGINE'])
+
+    info.append("<h2>Database modules</h2>")
+    info.append(get_status_of_module('anydbm', version=False) + "<br>")
+    info.append(get_status_of_module('sqlite3') + "<br>")
+    info.append(get_status_of_module('MySQLdb') + "<br>")
+    info.append(get_status_of_module('psycopg2') + "<br>")
+
+    info.append("<h2>Other modules</h2>")
+
+    info.append(get_status_of_module('pytz') + "<br>")
+    if is_module_loaded('xapian'):
+        info.append(get_status_of_module('xapian', prefix="Test indexer:") +
+                    "<br>")
+    elif is_module_loaded('whoosh'):
+        info.append(get_status_of_module('whoosh', prefix="Test indexer:") +
+                    "<br>")
+    else:
+        info.append("Text indexer: Native enabled: True<br>")
+
+    info.append(get_status_of_module('pyme') + "<br>")
+    info.append(get_status_of_module('OpenSSL') + "<br>")
+    info.append(get_status_of_module('pychart') + "<br>")
+
+    info.append(get_status_of_module('jinja2') + "<br>")
+
+    if db._db.getuid() == "1":
+        #may leak sensitive info about system, directory paths etc.
+        #and keys so require admin user access. Consider expanding
+        #to Admin rights for tracker.
+        info.append("")
+        info.append("Module Path: %r"%sys.path)
+
+        info.append("<h2>Environment Variables</h2>")
+        info.append("<pre>") # include pre to prevent wrapping of values
+        for key in db._client.env.keys():
+            info.append("%s=%s"%(key,db._client.env[key]) + "<br>")
+        info.append("</pre>")
+    return "\n".join(info)
+
+def init(instance):
+    instance.registerUtil('AboutPage', AboutPage)
+