Allow selection of default authentication backend

doorlockd.cfg

@@ -1,5 +1,6 @@
 [doorlock]
 # Authentication Backends
+# DEFAULT_BACKEND=LDAP
 
 # LDAP
 # LDAP_URI = ldaps://ldap1.binary.kitchen

pydoorlock/WebApp.py

@@ -157,9 +157,13 @@ def home():
     # Don't trust python, zero credentials
     user = password = credentials = None
 
+    auth_backends=[{"backend":b,
+                    "selected":(b==default_backend)}
+                    for b in logic.auth.backends]
+
     return render_template('index.html',
                            authentication_form=authentication_form,
-                           auth_backends=logic.auth.backends,
+                           auth_backends=auth_backends,
                            response=response,
                            state_text=str(logic.state),
                            led=logic.state.to_img(),
@@ -188,6 +192,9 @@ def webapp_run(cfg, my_logic, status, version, template_folder, static_folder):
     global html_title
     html_title = '%s (%s - v%s)' % (title, status, version)
 
+    global default_backend
+    default_backend = cfg.str('DEFAULT_BACKEND')
+
     webapp.config['SECRET_KEY'] = cfg.str('SECRET_KEY')
     webapp.template_folder = template_folder
     webapp.static_folder = static_folder

share/doorlockd/templates/index.html

@@ -26,8 +26,8 @@
 			<div class="form-group">
 				<label for="method">Authentication method</label>
 				<select name="method" id="method" class="form-control">
-					{% for backend in auth_backends %}
-					<option>{{ backend }}</option>
+					{% for backend, selected in auth_backends|sort(attribute="backend") %}
+					<option{% if selected %} selected{% endif %}>{{ backend }}</option>
 					{% endfor %}
 				</select>
 			</div>