From fd3d3d11d1f00dc28bc136afa1cccfd94419f4fc Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Christian=20M=C3=A4der?= <mail@cimnine.ch>
Date: Sat, 17 Oct 2020 23:09:26 +0200
Subject: [PATCH 01/14] Tiny refactoring

---
 configuration/configuration.py | 1 -
 startup_scripts/__main__.py    | 2 +-
 2 files changed, 1 insertion(+), 2 deletions(-)

diff --git a/configuration/configuration.py b/configuration/configuration.py
index f7c8ed5..7230927 100644
--- a/configuration/configuration.py
+++ b/configuration/configuration.py
@@ -1,6 +1,5 @@
 import os
 import re
-import socket
 
 # For reference see http://netbox.readthedocs.io/en/latest/configuration/mandatory-settings/
 # Based on https://github.com/netbox-community/netbox/blob/develop/netbox/netbox/configuration.example.py
diff --git a/startup_scripts/__main__.py b/startup_scripts/__main__.py
index c41bba6..dc4cdc9 100644
--- a/startup_scripts/__main__.py
+++ b/startup_scripts/__main__.py
@@ -9,7 +9,7 @@ this_dir = dirname(abspath(__file__))
 def filename(f):
   return f.name
 
-with scandir(dirname(abspath(__file__))) as it:
+with scandir(this_dir) as it:
   for f in sorted(it, key = filename):
     if not f.is_file():
       continue

From 43c05d816df73a9a4268543aa5691432379cd91a Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Christian=20M=C3=A4der?= <mail@cimnine.ch>
Date: Sun, 18 Oct 2020 02:34:45 +0200
Subject: [PATCH 02/14] Dynamically load configuration files

---
 Dockerfile                                   |  7 +--
 configuration/{ => ldap}/ldap_config.py      |  0
 docker/configuration.docker.py               | 62 ++++++++++++++++++--
 {configuration => docker}/gunicorn_config.py |  0
 docker/ldap_config.docker.py                 | 62 ++++++++++++++++++--
 5 files changed, 117 insertions(+), 14 deletions(-)
 rename configuration/{ => ldap}/ldap_config.py (100%)
 rename {configuration => docker}/gunicorn_config.py (100%)

diff --git a/Dockerfile b/Dockerfile
index 4347aa8..8db4cac 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -61,12 +61,12 @@ ARG NETBOX_PATH
 COPY ${NETBOX_PATH} /opt/netbox
 
 COPY docker/configuration.docker.py /opt/netbox/netbox/netbox/configuration.py
-COPY configuration/gunicorn_config.py /etc/netbox/config/
+COPY docker/gunicorn_config.py /etc/netbox/
 COPY docker/nginx.conf /etc/netbox-nginx/nginx.conf
 COPY docker/docker-entrypoint.sh /opt/netbox/docker-entrypoint.sh
 COPY startup_scripts/ /opt/netbox/startup_scripts/
 COPY initializers/ /opt/netbox/initializers/
-COPY configuration/configuration.py /etc/netbox/config/configuration.py
+COPY configuration/ /etc/netbox/config/
 
 WORKDIR /opt/netbox/netbox
 
@@ -79,7 +79,7 @@ RUN mkdir static && chmod -R g+w static media
 
 ENTRYPOINT [ "/opt/netbox/docker-entrypoint.sh" ]
 
-CMD ["gunicorn", "-c /etc/netbox/config/gunicorn_config.py", "netbox.wsgi"]
+CMD ["gunicorn", "-c /etc/netbox/gunicorn_config.py", "netbox.wsgi"]
 
 LABEL ORIGINAL_TAG="" \
       NETBOX_GIT_BRANCH="" \
@@ -122,4 +122,3 @@ RUN apk add --no-cache \
       util-linux
 
 COPY docker/ldap_config.docker.py /opt/netbox/netbox/netbox/ldap_config.py
-COPY configuration/ldap_config.py /etc/netbox/config/ldap_config.py
diff --git a/configuration/ldap_config.py b/configuration/ldap/ldap_config.py
similarity index 100%
rename from configuration/ldap_config.py
rename to configuration/ldap/ldap_config.py
diff --git a/docker/configuration.docker.py b/docker/configuration.docker.py
index 733887f..3a4d2a2 100644
--- a/docker/configuration.docker.py
+++ b/docker/configuration.docker.py
@@ -1,10 +1,62 @@
+from os.path import abspath, isfile
+from os import scandir
 import importlib.util
 import sys
 
-try:
-  spec = importlib.util.spec_from_file_location('configuration', '/etc/netbox/config/configuration.py')
+_CONFIG_DIR = '/etc/netbox/config/'
+_MAIN_CONFIG = 'configuration'
+_MODULE = 'netbox.configuration'
+_loaded_configurations = []
+
+
+def __getattr__(name):
+  for config in _loaded_configurations:
+    try:
+      return getattr(config, name)
+    except:
+      pass
+  raise AttributeError
+
+
+def _filename(f):
+  return f.name
+
+
+def _import(module_name, path):
+  spec = importlib.util.spec_from_file_location('', path)
   module = importlib.util.module_from_spec(spec)
   spec.loader.exec_module(module)
-  sys.modules['netbox.configuration'] = module
-except:
-  raise ImportError('')
+  sys.modules[module_name] = module
+
+  _loaded_configurations.insert(0, module)
+
+  print(f"🧬 loaded config '{path}'")
+
+
+_main_config_path = abspath(f'{_CONFIG_DIR}/{_MAIN_CONFIG}.py')
+if isfile(_main_config_path):
+  _import(f'{_MODULE}.configuration', _main_config_path)
+else:
+  print(f"⚠️ Main configuration '{_main_config_path}' not found.")
+
+with scandir(_CONFIG_DIR) as it:
+  for f in sorted(it, key=_filename):
+    if not f.is_file():
+      continue
+
+    if f.name.startswith('__'):
+      continue
+
+    if not f.name.endswith('.py'):
+      continue
+
+    if f.name == f'{_MAIN_CONFIG}.py':
+      continue
+
+    module_name = f"{_MODULE}.{f.name[:-len('.py')]}"
+
+    _import(module_name, f.path)
+
+if len(_loaded_configurations) == 0:
+  print(f"‼️ No configuration files found in '{_CONFIG_DIR}'.")
+  raise ImportError(f"No configuration files found in '{_CONFIG_DIR}'.")
diff --git a/configuration/gunicorn_config.py b/docker/gunicorn_config.py
similarity index 100%
rename from configuration/gunicorn_config.py
rename to docker/gunicorn_config.py
diff --git a/docker/ldap_config.docker.py b/docker/ldap_config.docker.py
index 8d82173..601ba71 100644
--- a/docker/ldap_config.docker.py
+++ b/docker/ldap_config.docker.py
@@ -1,10 +1,62 @@
+from os.path import abspath, isfile
+from os import scandir
 import importlib.util
 import sys
 
-try:
-  spec = importlib.util.spec_from_file_location('ldap_config', '/etc/netbox/config/ldap_config.py')
+_CONFIG_DIR = '/etc/netbox/config/ldap/'
+_MAIN_CONFIG = 'ldap_config'
+_MODULE = 'netbox.configuration.ldap'
+_loaded_configurations = []
+
+
+def __getattr__(name):
+  for config in _loaded_configurations:
+    try:
+      return getattr(config, name)
+    except:
+      pass
+  raise AttributeError
+
+
+def _filename(f):
+  return f.name
+
+
+def _import(module_name, path):
+  spec = importlib.util.spec_from_file_location('', path)
   module = importlib.util.module_from_spec(spec)
   spec.loader.exec_module(module)
-  sys.modules['netbox.ldap_config'] = module
-except:
-  raise ImportError('')
+  sys.modules[module_name] = module
+
+  _loaded_configurations.insert(0, module)
+
+  print(f"🧬 loaded config '{path}'")
+
+
+_main_config_path = abspath(f'{_CONFIG_DIR}/{_MAIN_CONFIG}.py')
+if isfile(_main_config_path):
+  _import(f'{_MODULE}.configuration', _main_config_path)
+else:
+  print(f"⚠️ Main configuration '{_main_config_path}' not found.")
+
+with scandir(_CONFIG_DIR) as it:
+  for f in sorted(it, key=_filename):
+    if not f.is_file():
+      continue
+
+    if f.name.startswith('__'):
+      continue
+
+    if not f.name.endswith('.py'):
+      continue
+
+    if f.name == f'{_MAIN_CONFIG}.py':
+      continue
+
+    module_name = f"{_MODULE}.{f.name[:-len('.py')]}"
+
+    _import(module_name, f.path)
+
+if len(_loaded_configurations) == 0:
+  print(f"‼️ No configuration files found in '{_CONFIG_DIR}'.")
+  raise ImportError(f"No configuration files found in '{_CONFIG_DIR}'.")

From 7429835970773416d6a0841261e65c5ddc85f9ca Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Christian=20M=C3=A4der?= <mail@cimnine.ch>
Date: Sun, 18 Oct 2020 02:34:57 +0200
Subject: [PATCH 03/14] Sample dynamic configuration file

---
 configuration/example.py | 49 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 49 insertions(+)
 create mode 100644 configuration/example.py

diff --git a/configuration/example.py b/configuration/example.py
new file mode 100644
index 0000000..df74559
--- /dev/null
+++ b/configuration/example.py
@@ -0,0 +1,49 @@
+# Specify one or more name and email address tuples representing NetBox administrators. These people will be notified of
+# application errors (assuming correct email settings are provided).
+# ADMINS = [
+#     # ['John Doe', 'jdoe@example.com'],
+# ]
+
+
+# URL schemes that are allowed within links in NetBox
+# ALLOWED_URL_SCHEMES = (
+#     'file', 'ftp', 'ftps', 'http', 'https', 'irc', 'mailto', 'sftp', 'ssh', 'tel', 'telnet', 'tftp', 'vnc', 'xmpp',
+# )
+
+
+# NAPALM optional arguments (see http://napalm.readthedocs.io/en/latest/support/#optional-arguments). Arguments must
+# be provided as a dictionary.
+# NAPALM_ARGS = {}
+
+
+# Enable installed plugins. Add the name of each plugin to the list.
+# from netbox.configuration.configuration import PLUGINS
+# PLUGINS.append('my_plugin')
+
+# Plugins configuration settings. These settings are used by various plugins that the user may have installed.
+# Each key in the dictionary is the name of an installed plugin and its value is a dictionary of settings.
+# from netbox.configuration.configuration import PLUGINS_CONFIG
+# PLUGINS_CONFIG['my_plugin'] = {
+#   'foo': 'bar',
+#   'buzz': 'bazz'
+# }
+
+
+# Remote authentication support
+# REMOTE_AUTH_ENABLED = False
+# REMOTE_AUTH_BACKEND = 'netbox.authentication.RemoteUserBackend'
+# REMOTE_AUTH_HEADER = 'HTTP_REMOTE_USER'
+# REMOTE_AUTH_AUTO_CREATE_USER = True
+# REMOTE_AUTH_DEFAULT_GROUPS = []
+# REMOTE_AUTH_DEFAULT_PERMISSIONS = {}
+
+
+# By default uploaded media is stored on the local filesystem. Using Django-storages is also supported. Provide the
+# class path of the storage driver in STORAGE_BACKEND and any configuration options in STORAGE_CONFIG. For example:
+# STORAGE_BACKEND = 'storages.backends.s3boto3.S3Boto3Storage'
+# STORAGE_CONFIG = {
+#     'AWS_ACCESS_KEY_ID': 'Key ID',
+#     'AWS_SECRET_ACCESS_KEY': 'Secret',
+#     'AWS_STORAGE_BUCKET_NAME': 'netbox',
+#     'AWS_S3_REGION_NAME': 'eu-west-1',
+# }

From 811618b3591c7fac0f6441eff3319e6ecdd1c480 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Christian=20M=C3=A4der?= <mail@cimnine.ch>
Date: Sun, 18 Oct 2020 02:35:09 +0200
Subject: [PATCH 04/14] Lower gunicorn default loglevel

---
 docker/gunicorn_config.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/docker/gunicorn_config.py b/docker/gunicorn_config.py
index 063d822..4ce7763 100644
--- a/docker/gunicorn_config.py
+++ b/docker/gunicorn_config.py
@@ -5,4 +5,4 @@ workers = 3
 errorlog = '-'
 accesslog = '-'
 capture_output = False
-loglevel = 'debug'
+loglevel = 'info'

From 553c8ea47026bb8aa8dfa9797aa3cfd1fd02d3de Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Christian=20M=C3=A4der?= <mail@cimnine.ch>
Date: Sun, 18 Oct 2020 02:35:22 +0200
Subject: [PATCH 05/14] Update configuration.py

---
 configuration/configuration.py | 228 ++++++++++++++++++---------------
 1 file changed, 128 insertions(+), 100 deletions(-)

diff --git a/configuration/configuration.py b/configuration/configuration.py
index 7230927..5a9da1e 100644
--- a/configuration/configuration.py
+++ b/configuration/configuration.py
@@ -1,11 +1,13 @@
-import os
 import re
 
-# For reference see http://netbox.readthedocs.io/en/latest/configuration/mandatory-settings/
-# Based on https://github.com/netbox-community/netbox/blob/develop/netbox/netbox/configuration.example.py
+from os.path import dirname, abspath, join
+from os import environ
+
+# For reference see https://netbox.readthedocs.io/en/stable/configuration/
+# Based on https://github.com/netbox-community/netbox/blob/master/netbox/netbox/configuration.example.py
 
 # Read secret from file
-def read_secret(secret_name, default=None):
+def _read_secret(secret_name, default = None):
     try:
         f = open('/run/secrets/' + secret_name, 'r', encoding='utf-8')
     except EnvironmentError:
@@ -14,7 +16,7 @@ def read_secret(secret_name, default=None):
         with f:
             return f.readline().strip()
 
-BASE_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
+_BASE_DIR = dirname(dirname(abspath(__file__)))
 
 #########################
 #                       #
@@ -26,55 +28,49 @@ BASE_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
 # access to the server via any other hostnames. The first FQDN in the list will be treated as the preferred name.
 #
 # Example: ALLOWED_HOSTS = ['netbox.example.com', 'netbox.internal.local']
-ALLOWED_HOSTS = os.environ.get('ALLOWED_HOSTS', '*').split(' ')
+ALLOWED_HOSTS = environ.get('ALLOWED_HOSTS', '*').split(' ')
 
-# PostgreSQL database configuration.
+# PostgreSQL database configuration. See the Django documentation for a complete list of available parameters:
+#   https://docs.djangoproject.com/en/stable/ref/settings/#databases
 DATABASE = {
-    'NAME': os.environ.get('DB_NAME', 'netbox'),         # Database name
-    'USER': os.environ.get('DB_USER', ''),               # PostgreSQL username
-    'PASSWORD': read_secret('db_password', os.environ.get('DB_PASSWORD', '')),
+    'NAME': environ.get('DB_NAME', 'netbox'),            # Database name
+    'USER': environ.get('DB_USER', ''),                  # PostgreSQL username
+    'PASSWORD': environ.get('DB_PASSWORD', _read_secret('db_password')),
                                                          # PostgreSQL password
-    'HOST': os.environ.get('DB_HOST', 'localhost'),      # Database server
-    'PORT': os.environ.get('DB_PORT', ''),               # Database port (leave blank for default)
-    'OPTIONS': {'sslmode': os.environ.get('DB_SSLMODE', 'prefer')},
+    'HOST': environ.get('DB_HOST', 'localhost'),         # Database server
+    'PORT': environ.get('DB_PORT', ''),                  # Database port (leave blank for default)
+    'OPTIONS': {'sslmode': environ.get('DB_SSLMODE', 'prefer')},
                                                          # Database connection SSLMODE
-    'CONN_MAX_AGE': int(os.environ.get('DB_CONN_MAX_AGE', '300')),
-                                                         # Database connection persistence
+    'CONN_MAX_AGE': int(environ.get('DB_CONN_MAX_AGE', '300')),
+                                                         # Max database connection age
+}
+
+# Redis database settings. Redis is used for caching and for queuing background tasks such as webhook events. A separate
+# configuration exists for each. Full connection details are required in both sections, and it is strongly recommended
+# to use two separate database IDs.
+REDIS = {
+    'tasks': {
+        'HOST': environ.get('REDIS_HOST', 'localhost'),
+        'PORT': int(environ.get('REDIS_PORT', 6379)),
+        'PASSWORD': environ.get('REDIS_PASSWORD', _read_secret('redis_password')),
+        'DATABASE': int(environ.get('REDIS_DATABASE', 0)),
+        'SSL': environ.get('REDIS_SSL', 'False').lower() == 'true',
+    },
+    'caching': {
+        'HOST': environ.get('REDIS_CACHE_HOST', environ.get('REDIS_HOST', 'localhost')),
+        'PORT': int(environ.get('REDIS_CACHE_PORT', environ.get('REDIS_PORT', 6379))),
+        'PASSWORD': environ.get('REDIS_CACHE_PASSWORD', environ.get('REDIS_PASSWORD', _read_secret('redis_cache_password'))),
+        'DATABASE': int(environ.get('REDIS_CACHE_DATABASE', 1)),
+        'SSL': environ.get('REDIS_CACHE_SSL', environ.get('REDIS_SSL', 'False')).lower() == 'true',
+    },
 }
 
 # This key is used for secure generation of random numbers and strings. It must never be exposed outside of this file.
 # For optimal security, SECRET_KEY should be at least 50 characters in length and contain a mix of letters, numbers, and
 # symbols. NetBox will not run without this defined. For more information, see
-# https://docs.djangoproject.com/en/dev/ref/settings/#std:setting-SECRET_KEY
-SECRET_KEY = read_secret('secret_key', os.environ.get('SECRET_KEY', ''))
+# https://docs.djangoproject.com/en/stable/ref/settings/#std:setting-SECRET_KEY
+SECRET_KEY = environ.get('SECRET_KEY', _read_secret('secret_key'))
 
-# Redis database settings. The Redis database is used for caching and background processing such as webhooks
-REDIS = {
-    'tasks': {
-        'HOST': os.environ.get('REDIS_HOST', 'localhost'),
-        'PORT': int(os.environ.get('REDIS_PORT', 6379)),
-        'PASSWORD': read_secret('redis_password', os.environ.get('REDIS_PASSWORD', ''),
-        'DATABASE': int(os.environ.get('REDIS_DATABASE', 0)),
-        'DEFAULT_TIMEOUT': int(os.environ.get('REDIS_TIMEOUT', 300)),
-        'SSL': os.environ.get('REDIS_SSL', 'False').lower() == 'true',
-    },
-    'webhooks': { # legacy setting, can be removed after Netbox seizes support for it
-        'HOST': os.environ.get('REDIS_HOST', 'localhost'),
-        'PORT': int(os.environ.get('REDIS_PORT', 6379)),
-        'PASSWORD': read_secret('redis_password', os.environ.get('REDIS_PASSWORD', ''),
-        'DATABASE': int(os.environ.get('REDIS_DATABASE', 0)),
-        'DEFAULT_TIMEOUT': int(os.environ.get('REDIS_TIMEOUT', 300)),
-        'SSL': os.environ.get('REDIS_SSL', 'False').lower() == 'true',
-    },
-    'caching': {
-        'HOST': os.environ.get('REDIS_CACHE_HOST', os.environ.get('REDIS_HOST', 'localhost')),
-        'PORT': int(os.environ.get('REDIS_CACHE_PORT', os.environ.get('REDIS_PORT', 6379))),
-        'PASSWORD': read_secret('redis_cache_password', os.environ.get('REDIS_CACHE_PASSWORD', read_secret('redis_password', os.environ.get('REDIS_PASSWORD', '')))),
-        'DATABASE': int(os.environ.get('REDIS_CACHE_DATABASE', 1)),
-        'DEFAULT_TIMEOUT': int(os.environ.get('REDIS_CACHE_TIMEOUT', os.environ.get('REDIS_TIMEOUT', 300))),
-        'SSL': os.environ.get('REDIS_CACHE_SSL', os.environ.get('REDIS_SSL', 'False')).lower() == 'true',
-    },
-}
 
 #########################
 #                       #
@@ -88,135 +84,167 @@ ADMINS = [
     # ['John Doe', 'jdoe@example.com'],
 ]
 
+# URL schemes that are allowed within links in NetBox
+ALLOWED_URL_SCHEMES = (
+    'file', 'ftp', 'ftps', 'http', 'https', 'irc', 'mailto', 'sftp', 'ssh', 'tel', 'telnet', 'tftp', 'vnc', 'xmpp',
+)
+
 # Optionally display a persistent banner at the top and/or bottom of every page. HTML is allowed. To display the same
 # content in both banners, define BANNER_TOP and set BANNER_BOTTOM = BANNER_TOP.
-BANNER_TOP = os.environ.get('BANNER_TOP', '')
-BANNER_BOTTOM = os.environ.get('BANNER_BOTTOM', '')
+BANNER_TOP = environ.get('BANNER_TOP', '')
+BANNER_BOTTOM = environ.get('BANNER_BOTTOM', '')
 
 # Text to include on the login page above the login form. HTML is allowed.
-BANNER_LOGIN = os.environ.get('BANNER_LOGIN', '')
+BANNER_LOGIN = environ.get('BANNER_LOGIN', '')
 
 # Base URL path if accessing NetBox within a directory. For example, if installed at http://example.com/netbox/, set:
 # BASE_PATH = 'netbox/'
-BASE_PATH = os.environ.get('BASE_PATH', '')
+BASE_PATH = environ.get('BASE_PATH', '')
 
 # Cache timeout in seconds. Set to 0 to dissable caching. Defaults to 900 (15 minutes)
-CACHE_TIMEOUT = int(os.environ.get('CACHE_TIMEOUT', 900))
+CACHE_TIMEOUT = int(environ.get('CACHE_TIMEOUT', 900))
 
 # Maximum number of days to retain logged changes. Set to 0 to retain changes indefinitely. (Default: 90)
-CHANGELOG_RETENTION = int(os.environ.get('CHANGELOG_RETENTION', 90))
+CHANGELOG_RETENTION = int(environ.get('CHANGELOG_RETENTION', 90))
 
 # API Cross-Origin Resource Sharing (CORS) settings. If CORS_ORIGIN_ALLOW_ALL is set to True, all origins will be
 # allowed. Otherwise, define a list of allowed origins using either CORS_ORIGIN_WHITELIST or
 # CORS_ORIGIN_REGEX_WHITELIST. For more information, see https://github.com/ottoyiu/django-cors-headers
-CORS_ORIGIN_ALLOW_ALL = os.environ.get('CORS_ORIGIN_ALLOW_ALL', 'False').lower() == 'true'
-CORS_ORIGIN_WHITELIST = list(filter(None, os.environ.get('CORS_ORIGIN_WHITELIST', 'https://localhost').split(' ')))
-CORS_ORIGIN_REGEX_WHITELIST = [re.compile(r) for r in list(filter(None, os.environ.get('CORS_ORIGIN_REGEX_WHITELIST', '').split(' ')))]
+CORS_ORIGIN_ALLOW_ALL = environ.get('CORS_ORIGIN_ALLOW_ALL', 'False').lower() == 'true'
+CORS_ORIGIN_WHITELIST = list(filter(None, environ.get('CORS_ORIGIN_WHITELIST', 'https://localhost').split(' ')))
+CORS_ORIGIN_REGEX_WHITELIST = [re.compile(r) for r in list(filter(None, environ.get('CORS_ORIGIN_REGEX_WHITELIST', '').split(' ')))]
 
 # Set to True to enable server debugging. WARNING: Debugging introduces a substantial performance penalty and may reveal
 # sensitive information about your installation. Only enable debugging while performing testing. Never enable debugging
 # on a production system.
-DEBUG = os.environ.get('DEBUG', 'False').lower() == 'true'
+DEBUG = environ.get('DEBUG', 'False').lower() == 'true'
 
 # Email settings
 EMAIL = {
-    'SERVER': os.environ.get('EMAIL_SERVER', 'localhost'),
-    'PORT': int(os.environ.get('EMAIL_PORT', 25)),
-    'USERNAME': os.environ.get('EMAIL_USERNAME', ''),
-    'PASSWORD': read_secret('email_password', os.environ.get('EMAIL_PASSWORD', '')),
-    'TIMEOUT': int(os.environ.get('EMAIL_TIMEOUT', 10)),  # seconds
-    'FROM_EMAIL': os.environ.get('EMAIL_FROM', ''),
-    'USE_SSL': os.environ.get('EMAIL_USE_SSL', 'False').lower() == 'true',
-    'USE_TLS': os.environ.get('EMAIL_USE_TLS', 'False').lower() == 'true',
-    'SSL_CERTFILE': os.environ.get('EMAIL_SSL_CERTFILE', ''),
-    'SSL_KEYFILE': os.environ.get('EMAIL_SSL_KEYFILE', ''),
+    'SERVER': environ.get('EMAIL_SERVER', 'localhost'),
+    'PORT': int(environ.get('EMAIL_PORT', 25)),
+    'USERNAME': environ.get('EMAIL_USERNAME', ''),
+    'PASSWORD': environ.get('EMAIL_PASSWORD', _read_secret('email_password')),
+    'USE_SSL': environ.get('EMAIL_USE_SSL', 'False').lower() == 'true',
+    'USE_TLS': environ.get('EMAIL_USE_TLS', 'False').lower() == 'true',
+    'SSL_CERTFILE': environ.get('EMAIL_SSL_CERTFILE', ''),
+    'SSL_KEYFILE': environ.get('EMAIL_SSL_KEYFILE', ''),
+    'TIMEOUT': int(environ.get('EMAIL_TIMEOUT', 10)),  # seconds
+    'FROM_EMAIL': environ.get('EMAIL_FROM', ''),
 }
 
-# Enforcement of unique IP space can be toggled on a per-VRF basis.
-# To enforce unique IP space within the global table (all prefixes and IP addresses not assigned to a VRF),
-# set ENFORCE_GLOBAL_UNIQUE to True.
-ENFORCE_GLOBAL_UNIQUE = os.environ.get('ENFORCE_GLOBAL_UNIQUE', 'False').lower() == 'true'
+# Enforcement of unique IP space can be toggled on a per-VRF basis. To enforce unique IP space within the global table
+# (all prefixes and IP addresses not assigned to a VRF), set ENFORCE_GLOBAL_UNIQUE to True.
+ENFORCE_GLOBAL_UNIQUE = environ.get('ENFORCE_GLOBAL_UNIQUE', 'False').lower() == 'true'
 
 # Exempt certain models from the enforcement of view permissions. Models listed here will be viewable by all users and
 # by anonymous users. List models in the form `<app>.<model>`. Add '*' to this list to exempt all models.
-EXEMPT_VIEW_PERMISSIONS = list(filter(None, os.environ.get('EXEMPT_VIEW_PERMISSIONS', '').split(' ')))
+EXEMPT_VIEW_PERMISSIONS = list(filter(None, environ.get('EXEMPT_VIEW_PERMISSIONS', '').split(' ')))
 
 # Enable custom logging. Please see the Django documentation for detailed guidance on configuring custom logs:
-#   https://docs.djangoproject.com/en/1.11/topics/logging/
+#   https://docs.djangoproject.com/en/stable/topics/logging/
 LOGGING = {}
 
 # Setting this to True will permit only authenticated users to access any part of NetBox. By default, anonymous users
 # are permitted to access most data in NetBox (excluding secrets) but not make any changes.
-LOGIN_REQUIRED = os.environ.get('LOGIN_REQUIRED', 'False').lower() == 'true'
+LOGIN_REQUIRED = environ.get('LOGIN_REQUIRED', 'False').lower() == 'true'
 
 # The length of time (in seconds) for which a user will remain logged into the web UI before being prompted to
 # re-authenticate. (Default: 1209600 [14 days])
-LOGIN_TIMEOUT = os.environ.get('LOGIN_TIMEOUT', None)
+LOGIN_TIMEOUT = environ.get('LOGIN_TIMEOUT', None)
 
 # Setting this to True will display a "maintenance mode" banner at the top of every page.
-MAINTENANCE_MODE = os.environ.get('MAINTENANCE_MODE', 'False').lower() == 'true'
+MAINTENANCE_MODE = environ.get('MAINTENANCE_MODE', 'False').lower() == 'true'
 
 # An API consumer can request an arbitrary number of objects =by appending the "limit" parameter to the URL (e.g.
 # "?limit=1000"). This setting defines the maximum limit. Setting it to 0 or None will allow an API consumer to request
 # all objects by specifying "?limit=0".
-MAX_PAGE_SIZE = int(os.environ.get('MAX_PAGE_SIZE', 1000))
+MAX_PAGE_SIZE = int(environ.get('MAX_PAGE_SIZE', 1000))
 
 # The file path where uploaded media such as image attachments are stored. A trailing slash is not needed. Note that
 # the default value of this setting is derived from the installed location.
-MEDIA_ROOT = os.environ.get('MEDIA_ROOT', os.path.join(BASE_DIR, 'media'))
+MEDIA_ROOT = environ.get('MEDIA_ROOT', join(_BASE_DIR, 'media'))
 
 # Expose Prometheus monitoring metrics at the HTTP endpoint '/metrics'
-METRICS_ENABLED = os.environ.get('METRICS_ENABLED', 'False').lower() == 'true'
+METRICS_ENABLED = environ.get('METRICS_ENABLED', 'False').lower() == 'true'
 
-# Credentials that NetBox will use to access live devices.
-NAPALM_USERNAME = os.environ.get('NAPALM_USERNAME', '')
-NAPALM_PASSWORD = read_secret('napalm_password', os.environ.get('NAPALM_PASSWORD', ''))
+# Credentials that NetBox will uses to authenticate to devices when connecting via NAPALM.
+NAPALM_USERNAME = environ.get('NAPALM_USERNAME', '')
+NAPALM_PASSWORD = environ.get('NAPALM_PASSWORD', _read_secret('napalm_password'))
 
 # NAPALM timeout (in seconds). (Default: 30)
-NAPALM_TIMEOUT = int(os.environ.get('NAPALM_TIMEOUT', 30))
+NAPALM_TIMEOUT = int(environ.get('NAPALM_TIMEOUT', 30))
 
 # NAPALM optional arguments (see http://napalm.readthedocs.io/en/latest/support/#optional-arguments). Arguments must
 # be provided as a dictionary.
 NAPALM_ARGS = {}
 
 # Determine how many objects to display per page within a list. (Default: 50)
-PAGINATE_COUNT = int(os.environ.get('PAGINATE_COUNT', 50))
+PAGINATE_COUNT = int(environ.get('PAGINATE_COUNT', 50))
+
+# Enable installed plugins. Add the name of each plugin to the list.
+PLUGINS = []
+
+# Plugins configuration settings. These settings are used by various plugins that the user may have installed.
+# Each key in the dictionary is the name of an installed plugin and its value is a dictionary of settings.
+PLUGINS_CONFIG = {
+}
 
 # When determining the primary IP address for a device, IPv6 is preferred over IPv4 by default. Set this to True to
 # prefer IPv4 instead.
-PREFER_IPV4 = os.environ.get('PREFER_IPV4', 'False').lower() == 'true'
+PREFER_IPV4 = environ.get('PREFER_IPV4', 'False').lower() == 'true'
 
-# This determines how often the GitHub API is called to check the latest release of NetBox in seconds. Must be at least 1 hour.
-RELEASE_CHECK_TIMEOUT = os.environ.get('RELEASE_CHECK_TIMEOUT', 24 * 3600)
+# Rack elevation size defaults, in pixels. For best results, the ratio of width to height should be roughly 10:1.
+RACK_ELEVATION_DEFAULT_UNIT_HEIGHT = int(environ.get('RACK_ELEVATION_DEFAULT_UNIT_HEIGHT', 22))
+RACK_ELEVATION_DEFAULT_UNIT_WIDTH = int(environ.get('RACK_ELEVATION_DEFAULT_UNIT_WIDTH', 220))
+
+# Remote authentication support
+REMOTE_AUTH_ENABLED = False
+# REMOTE_AUTH_BACKEND = 'netbox.authentication.RemoteUserBackend'
+# REMOTE_AUTH_HEADER = 'HTTP_REMOTE_USER'
+# REMOTE_AUTH_AUTO_CREATE_USER = True
+# REMOTE_AUTH_DEFAULT_GROUPS = []
+# REMOTE_AUTH_DEFAULT_PERMISSIONS = {}
+
+# This determines how often the GitHub API is called to check the latest release of NetBox. Must be at least 1 hour.
+RELEASE_CHECK_TIMEOUT = int(environ.get('RELEASE_CHECK_TIMEOUT', 24 * 3600))
 
 # This repository is used to check whether there is a new release of NetBox available. Set to None to disable the
 # version check or use the URL below to check for release in the official NetBox repository.
 # https://api.github.com/repos/netbox-community/netbox/releases
-RELEASE_CHECK_URL = os.environ.get('RELEASE_CHECK_URL', None)
+RELEASE_CHECK_URL = environ.get('RELEASE_CHECK_URL', None)
 
 # The file path where custom reports will be stored. A trailing slash is not needed. Note that the default value of
 # this setting is derived from the installed location.
-REPORTS_ROOT = os.environ.get('REPORTS_ROOT', '/etc/netbox/reports')
+REPORTS_ROOT = environ.get('REPORTS_ROOT', '/etc/netbox/reports')
+
+# Maximum execution time for background tasks, in seconds.
+RQ_DEFAULT_TIMEOUT = int(environ.get('RQ_DEFAULT_TIMEOUT', 300))
 
 # The file path where custom scripts will be stored. A trailing slash is not needed. Note that the default value of
 # this setting is derived from the installed location.
-SCRIPTS_ROOT = os.environ.get('SCRIPTS_ROOT', '/etc/netbox/scripts')
+SCRIPTS_ROOT = environ.get('SCRIPTS_ROOT', '/etc/netbox/scripts')
+
+# By default, NetBox will store session data in the database. Alternatively, a file path can be specified here to use
+# local file storage instead. (This can be useful for enabling authentication on a standby instance with read-only
+# database access.) Note that the user as which NetBox runs must have read and write permissions to this path.
+SESSION_FILE_PATH = environ.get('REPORTS_ROOT', None)
 
 # Remote authentication support
-REMOTE_AUTH_ENABLED = os.environ.get('REMOTE_AUTH_ENABLED', 'False').lower() == 'true'
-REMOTE_AUTH_BACKEND = os.environ.get('REMOTE_AUTH_BACKEND', 'netbox.authentication.RemoteUserBackend')
-REMOTE_AUTH_HEADER = os.environ.get('REMOTE_AUTH_HEADER', 'HTTP_REMOTE_USER')
-REMOTE_AUTH_AUTO_CREATE_USER = os.environ.get('REMOTE_AUTH_AUTO_CREATE_USER', 'True').lower() == 'true'
-REMOTE_AUTH_DEFAULT_GROUPS = list(filter(None, os.environ.get('REMOTE_AUTH_DEFAULT_GROUPS', '').split(' ')))
+REMOTE_AUTH_ENABLED = environ.get('REMOTE_AUTH_ENABLED', 'False').lower() == 'true'
+REMOTE_AUTH_BACKEND = environ.get('REMOTE_AUTH_BACKEND', 'netbox.authentication.RemoteUserBackend')
+REMOTE_AUTH_HEADER = environ.get('REMOTE_AUTH_HEADER', 'HTTP_REMOTE_USER')
+REMOTE_AUTH_AUTO_CREATE_USER = environ.get('REMOTE_AUTH_AUTO_CREATE_USER', 'True').lower() == 'true'
+REMOTE_AUTH_DEFAULT_GROUPS = list(filter(None, environ.get('REMOTE_AUTH_DEFAULT_GROUPS', '').split(' ')))
 
 # Time zone (default: UTC)
-TIME_ZONE = os.environ.get('TIME_ZONE', 'UTC')
+TIME_ZONE = environ.get('TIME_ZONE', 'UTC')
 
 # Date/time formatting. See the following link for supported formats:
-# https://docs.djangoproject.com/en/dev/ref/templates/builtins/#date
-DATE_FORMAT = os.environ.get('DATE_FORMAT', 'N j, Y')
-SHORT_DATE_FORMAT = os.environ.get('SHORT_DATE_FORMAT', 'Y-m-d')
-TIME_FORMAT = os.environ.get('TIME_FORMAT', 'g:i a')
-SHORT_TIME_FORMAT = os.environ.get('SHORT_TIME_FORMAT', 'H:i:s')
-DATETIME_FORMAT = os.environ.get('DATETIME_FORMAT', 'N j, Y g:i a')
-SHORT_DATETIME_FORMAT = os.environ.get('SHORT_DATETIME_FORMAT', 'Y-m-d H:i')
+# https://docs.djangoproject.com/en/stable/ref/templates/builtins/#date
+DATE_FORMAT = environ.get('DATE_FORMAT', 'N j, Y')
+SHORT_DATE_FORMAT = environ.get('SHORT_DATE_FORMAT', 'Y-m-d')
+TIME_FORMAT = environ.get('TIME_FORMAT', 'g:i a')
+SHORT_TIME_FORMAT = environ.get('SHORT_TIME_FORMAT', 'H:i:s')
+DATETIME_FORMAT = environ.get('DATETIME_FORMAT', 'N j, Y g:i a')
+SHORT_DATETIME_FORMAT = environ.get('SHORT_DATETIME_FORMAT', 'Y-m-d H:i')

From 20820e10c25a833c9d9d71cb66472d85e35bf5c0 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Christian=20M=C3=A4der?= <mail@cimnine.ch>
Date: Sun, 18 Oct 2020 02:38:06 +0200
Subject: [PATCH 06/14] Optimize Imports in ldap_config.py

---
 configuration/ldap/ldap_config.py | 48 +++++++++++++++----------------
 1 file changed, 24 insertions(+), 24 deletions(-)

diff --git a/configuration/ldap/ldap_config.py b/configuration/ldap/ldap_config.py
index da6c6fe..b92a79a 100644
--- a/configuration/ldap/ldap_config.py
+++ b/configuration/ldap/ldap_config.py
@@ -1,11 +1,11 @@
 import ldap
-import os
 
 from django_auth_ldap.config import LDAPSearch
 from importlib import import_module
+from os import environ
 
 # Read secret from file
-def read_secret(secret_name, default=''):
+def _read_secret(secret_name, default=None):
     try:
         f = open('/run/secrets/' + secret_name, 'r', encoding='utf-8')
     except EnvironmentError:
@@ -15,7 +15,7 @@ def read_secret(secret_name, default=''):
             return f.readline().strip()
 
 # Import and return the group type based on string name
-def import_group_type(group_type_name):
+def _import_group_type(group_type_name):
     mod = import_module('django_auth_ldap.config')
     try:
         return getattr(mod, group_type_name)()
@@ -23,7 +23,7 @@ def import_group_type(group_type_name):
         return None
 
 # Server URI
-AUTH_LDAP_SERVER_URI = os.environ.get('AUTH_LDAP_SERVER_URI', '')
+AUTH_LDAP_SERVER_URI = environ.get('AUTH_LDAP_SERVER_URI', '')
 
 # The following may be needed if you are binding to Active Directory.
 AUTH_LDAP_CONNECTION_OPTIONS = {
@@ -31,54 +31,54 @@ AUTH_LDAP_CONNECTION_OPTIONS = {
 }
 
 # Set the DN and password for the NetBox service account.
-AUTH_LDAP_BIND_DN = os.environ.get('AUTH_LDAP_BIND_DN', '')
-AUTH_LDAP_BIND_PASSWORD = read_secret('auth_ldap_bind_password', os.environ.get('AUTH_LDAP_BIND_PASSWORD', ''))
+AUTH_LDAP_BIND_DN = environ.get('AUTH_LDAP_BIND_DN', '')
+AUTH_LDAP_BIND_PASSWORD = environ.get('AUTH_LDAP_BIND_PASSWORD', _read_secret('auth_ldap_bind_password'))
 
 # Set a string template that describes any user’s distinguished name based on the username.
-AUTH_LDAP_USER_DN_TEMPLATE = os.environ.get('AUTH_LDAP_USER_DN_TEMPLATE', None)
+AUTH_LDAP_USER_DN_TEMPLATE = environ.get('AUTH_LDAP_USER_DN_TEMPLATE', None)
 
 # Enable STARTTLS for ldap authentication.
-AUTH_LDAP_START_TLS = os.environ.get('AUTH_LDAP_START_TLS', 'False').lower() == 'true'
+AUTH_LDAP_START_TLS = environ.get('AUTH_LDAP_START_TLS', 'False').lower() == 'true'
 
 # Include this setting if you want to ignore certificate errors. This might be needed to accept a self-signed cert.
 # Note that this is a NetBox-specific setting which sets:
 #     ldap.set_option(ldap.OPT_X_TLS_REQUIRE_CERT, ldap.OPT_X_TLS_NEVER)
-LDAP_IGNORE_CERT_ERRORS = os.environ.get('LDAP_IGNORE_CERT_ERRORS', 'False').lower() == 'true'
+LDAP_IGNORE_CERT_ERRORS = environ.get('LDAP_IGNORE_CERT_ERRORS', 'False').lower() == 'true'
 
-AUTH_LDAP_USER_SEARCH_BASEDN = os.environ.get('AUTH_LDAP_USER_SEARCH_BASEDN', '')
-AUTH_LDAP_USER_SEARCH_ATTR = os.environ.get('AUTH_LDAP_USER_SEARCH_ATTR', 'sAMAccountName')
+AUTH_LDAP_USER_SEARCH_BASEDN = environ.get('AUTH_LDAP_USER_SEARCH_BASEDN', '')
+AUTH_LDAP_USER_SEARCH_ATTR = environ.get('AUTH_LDAP_USER_SEARCH_ATTR', 'sAMAccountName')
 AUTH_LDAP_USER_SEARCH = LDAPSearch(AUTH_LDAP_USER_SEARCH_BASEDN,
                                    ldap.SCOPE_SUBTREE,
                                    "(" + AUTH_LDAP_USER_SEARCH_ATTR + "=%(user)s)")
 
 # This search ought to return all groups to which the user belongs. django_auth_ldap uses this to determine group
 # heirarchy.
-AUTH_LDAP_GROUP_SEARCH_BASEDN = os.environ.get('AUTH_LDAP_GROUP_SEARCH_BASEDN', '')
-AUTH_LDAP_GROUP_SEARCH_CLASS = os.environ.get('AUTH_LDAP_GROUP_SEARCH_CLASS', 'group')
+AUTH_LDAP_GROUP_SEARCH_BASEDN = environ.get('AUTH_LDAP_GROUP_SEARCH_BASEDN', '')
+AUTH_LDAP_GROUP_SEARCH_CLASS = environ.get('AUTH_LDAP_GROUP_SEARCH_CLASS', 'group')
 AUTH_LDAP_GROUP_SEARCH = LDAPSearch(AUTH_LDAP_GROUP_SEARCH_BASEDN, ldap.SCOPE_SUBTREE,
                                     "(objectClass=" + AUTH_LDAP_GROUP_SEARCH_CLASS + ")")
-AUTH_LDAP_GROUP_TYPE = import_group_type(os.environ.get('AUTH_LDAP_GROUP_TYPE', 'GroupOfNamesType'))
+AUTH_LDAP_GROUP_TYPE = _import_group_type(environ.get('AUTH_LDAP_GROUP_TYPE', 'GroupOfNamesType'))
 
 # Define a group required to login.
-AUTH_LDAP_REQUIRE_GROUP = os.environ.get('AUTH_LDAP_REQUIRE_GROUP_DN', '')
+AUTH_LDAP_REQUIRE_GROUP = environ.get('AUTH_LDAP_REQUIRE_GROUP_DN', '')
 
 # Define special user types using groups. Exercise great caution when assigning superuser status.
 AUTH_LDAP_USER_FLAGS_BY_GROUP = {
-    "is_active": os.environ.get('AUTH_LDAP_REQUIRE_GROUP_DN', ''),
-    "is_staff": os.environ.get('AUTH_LDAP_IS_ADMIN_DN', ''),
-    "is_superuser": os.environ.get('AUTH_LDAP_IS_SUPERUSER_DN', '')
+    "is_active": environ.get('AUTH_LDAP_REQUIRE_GROUP_DN', ''),
+    "is_staff": environ.get('AUTH_LDAP_IS_ADMIN_DN', ''),
+    "is_superuser": environ.get('AUTH_LDAP_IS_SUPERUSER_DN', '')
 }
 
 # For more granular permissions, we can map LDAP groups to Django groups.
-AUTH_LDAP_FIND_GROUP_PERMS = os.environ.get('AUTH_LDAP_FIND_GROUP_PERMS', 'True').lower() == 'true'
-AUTH_LDAP_MIRROR_GROUPS = os.environ.get('AUTH_LDAP_MIRROR_GROUPS', None).lower() == 'true'
+AUTH_LDAP_FIND_GROUP_PERMS = environ.get('AUTH_LDAP_FIND_GROUP_PERMS', 'True').lower() == 'true'
+AUTH_LDAP_MIRROR_GROUPS = environ.get('AUTH_LDAP_MIRROR_GROUPS', None).lower() == 'true'
 
 # Cache groups for one hour to reduce LDAP traffic
-AUTH_LDAP_CACHE_TIMEOUT = int(os.environ.get('AUTH_LDAP_CACHE_TIMEOUT', 3600))
+AUTH_LDAP_CACHE_TIMEOUT = int(environ.get('AUTH_LDAP_CACHE_TIMEOUT', 3600))
 
 # Populate the Django user from the LDAP directory.
 AUTH_LDAP_USER_ATTR_MAP = {
-    "first_name": os.environ.get('AUTH_LDAP_ATTR_FIRSTNAME', 'givenName'),
-    "last_name": os.environ.get('AUTH_LDAP_ATTR_LASTNAME', 'sn'),
-    "email": os.environ.get('AUTH_LDAP_ATTR_MAIL', 'mail')
+    "first_name": environ.get('AUTH_LDAP_ATTR_FIRSTNAME', 'givenName'),
+    "last_name": environ.get('AUTH_LDAP_ATTR_LASTNAME', 'sn'),
+    "email": environ.get('AUTH_LDAP_ATTR_MAIL', 'mail')
 }

From 16b567939c2742f9b2e8ed194c3944f6f3a2af5c Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Christian=20M=C3=A4der?= <mail@cimnine.ch>
Date: Sun, 18 Oct 2020 02:50:51 +0200
Subject: [PATCH 07/14] Dot character has special meaning in module names

Therefore we esacpe it using the underscore character.
---
 docker/configuration.docker.py | 2 +-
 docker/ldap_config.docker.py   | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/docker/configuration.docker.py b/docker/configuration.docker.py
index 3a4d2a2..a47c353 100644
--- a/docker/configuration.docker.py
+++ b/docker/configuration.docker.py
@@ -53,7 +53,7 @@ with scandir(_CONFIG_DIR) as it:
     if f.name == f'{_MAIN_CONFIG}.py':
       continue
 
-    module_name = f"{_MODULE}.{f.name[:-len('.py')]}"
+    module_name = f"{_MODULE}.{f.name[:-len('.py')]}".replace(".", "_")
 
     _import(module_name, f.path)
 
diff --git a/docker/ldap_config.docker.py b/docker/ldap_config.docker.py
index 601ba71..7248195 100644
--- a/docker/ldap_config.docker.py
+++ b/docker/ldap_config.docker.py
@@ -53,7 +53,7 @@ with scandir(_CONFIG_DIR) as it:
     if f.name == f'{_MAIN_CONFIG}.py':
       continue
 
-    module_name = f"{_MODULE}.{f.name[:-len('.py')]}"
+    module_name = f"{_MODULE}.{f.name[:-len('.py')]}".replace(".", "_")
 
     _import(module_name, f.path)
 

From dc77f1a0b170e336328d45960a79ffd553fc2a9e Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Christian=20M=C3=A4der?= <mail@cimnine.ch>
Date: Tue, 20 Oct 2020 20:03:35 +0200
Subject: [PATCH 08/14] Ignore non-default configuration files

---
 .gitignore | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/.gitignore b/.gitignore
index 3389e7a..22b3cee 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,3 +3,8 @@
 .initializers
 docker-compose.override.yml
 *.pem
+configuration/*
+!configuration/configuration.py
+!configuration/example.py
+configuration/ldap/*
+!configuration/ldap/ldap_config.py

From dad06088348c1a061331eedd000489d3496f2f4f Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Christian=20M=C3=A4der?= <mail@cimnine.ch>
Date: Tue, 20 Oct 2020 20:11:10 +0200
Subject: [PATCH 09/14] Rename example.py to extra.py

And add some comments to the the file that hopefully guide the user.
---
 .gitignore                     |  2 +-
 configuration/configuration.py |  6 ++++
 configuration/example.py       | 49 ------------------------------
 configuration/extra.py         | 55 ++++++++++++++++++++++++++++++++++
 4 files changed, 62 insertions(+), 50 deletions(-)
 delete mode 100644 configuration/example.py
 create mode 100644 configuration/extra.py

diff --git a/.gitignore b/.gitignore
index 22b3cee..8e90907 100644
--- a/.gitignore
+++ b/.gitignore
@@ -5,6 +5,6 @@ docker-compose.override.yml
 *.pem
 configuration/*
 !configuration/configuration.py
-!configuration/example.py
+!configuration/extra.py
 configuration/ldap/*
 !configuration/ldap/ldap_config.py
diff --git a/configuration/configuration.py b/configuration/configuration.py
index 5a9da1e..4d1a146 100644
--- a/configuration/configuration.py
+++ b/configuration/configuration.py
@@ -1,3 +1,9 @@
+####
+## We recommend to not edit this file.
+## Create separate files to overwrite the settings.
+## See `extra.py` as an example.
+####
+
 import re
 
 from os.path import dirname, abspath, join
diff --git a/configuration/example.py b/configuration/example.py
deleted file mode 100644
index df74559..0000000
--- a/configuration/example.py
+++ /dev/null
@@ -1,49 +0,0 @@
-# Specify one or more name and email address tuples representing NetBox administrators. These people will be notified of
-# application errors (assuming correct email settings are provided).
-# ADMINS = [
-#     # ['John Doe', 'jdoe@example.com'],
-# ]
-
-
-# URL schemes that are allowed within links in NetBox
-# ALLOWED_URL_SCHEMES = (
-#     'file', 'ftp', 'ftps', 'http', 'https', 'irc', 'mailto', 'sftp', 'ssh', 'tel', 'telnet', 'tftp', 'vnc', 'xmpp',
-# )
-
-
-# NAPALM optional arguments (see http://napalm.readthedocs.io/en/latest/support/#optional-arguments). Arguments must
-# be provided as a dictionary.
-# NAPALM_ARGS = {}
-
-
-# Enable installed plugins. Add the name of each plugin to the list.
-# from netbox.configuration.configuration import PLUGINS
-# PLUGINS.append('my_plugin')
-
-# Plugins configuration settings. These settings are used by various plugins that the user may have installed.
-# Each key in the dictionary is the name of an installed plugin and its value is a dictionary of settings.
-# from netbox.configuration.configuration import PLUGINS_CONFIG
-# PLUGINS_CONFIG['my_plugin'] = {
-#   'foo': 'bar',
-#   'buzz': 'bazz'
-# }
-
-
-# Remote authentication support
-# REMOTE_AUTH_ENABLED = False
-# REMOTE_AUTH_BACKEND = 'netbox.authentication.RemoteUserBackend'
-# REMOTE_AUTH_HEADER = 'HTTP_REMOTE_USER'
-# REMOTE_AUTH_AUTO_CREATE_USER = True
-# REMOTE_AUTH_DEFAULT_GROUPS = []
-# REMOTE_AUTH_DEFAULT_PERMISSIONS = {}
-
-
-# By default uploaded media is stored on the local filesystem. Using Django-storages is also supported. Provide the
-# class path of the storage driver in STORAGE_BACKEND and any configuration options in STORAGE_CONFIG. For example:
-# STORAGE_BACKEND = 'storages.backends.s3boto3.S3Boto3Storage'
-# STORAGE_CONFIG = {
-#     'AWS_ACCESS_KEY_ID': 'Key ID',
-#     'AWS_SECRET_ACCESS_KEY': 'Secret',
-#     'AWS_STORAGE_BUCKET_NAME': 'netbox',
-#     'AWS_S3_REGION_NAME': 'eu-west-1',
-# }
diff --git a/configuration/extra.py b/configuration/extra.py
new file mode 100644
index 0000000..46f1877
--- /dev/null
+++ b/configuration/extra.py
@@ -0,0 +1,55 @@
+####
+## This file contains extra configuration options that can't be configured
+## directly through environment variables.
+####
+
+## Specify one or more name and email address tuples representing NetBox administrators. These people will be notified of
+## application errors (assuming correct email settings are provided).
+# ADMINS = [
+#     # ['John Doe', 'jdoe@example.com'],
+# ]
+
+
+## URL schemes that are allowed within links in NetBox
+# ALLOWED_URL_SCHEMES = (
+#     'file', 'ftp', 'ftps', 'http', 'https', 'irc', 'mailto', 'sftp', 'ssh', 'tel', 'telnet', 'tftp', 'vnc', 'xmpp',
+# )
+
+
+## NAPALM optional arguments (see http://napalm.readthedocs.io/en/latest/support/#optional-arguments). Arguments must
+## be provided as a dictionary.
+# NAPALM_ARGS = {}
+
+
+## Enable installed plugins. Add the name of each plugin to the list.
+# from netbox.configuration.configuration import PLUGINS
+# PLUGINS.append('my_plugin')
+
+## Plugins configuration settings. These settings are used by various plugins that the user may have installed.
+## Each key in the dictionary is the name of an installed plugin and its value is a dictionary of settings.
+# from netbox.configuration.configuration import PLUGINS_CONFIG
+# PLUGINS_CONFIG['my_plugin'] = {
+#   'foo': 'bar',
+#   'buzz': 'bazz'
+# }
+
+
+## Remote authentication support
+# REMOTE_AUTH_DEFAULT_PERMISSIONS = {}
+
+
+## By default uploaded media is stored on the local filesystem. Using Django-storages is also supported. Provide the
+## class path of the storage driver in STORAGE_BACKEND and any configuration options in STORAGE_CONFIG. For example:
+# STORAGE_BACKEND = 'storages.backends.s3boto3.S3Boto3Storage'
+# STORAGE_CONFIG = {
+#     'AWS_ACCESS_KEY_ID': 'Key ID',
+#     'AWS_SECRET_ACCESS_KEY': 'Secret',
+#     'AWS_STORAGE_BUCKET_NAME': 'netbox',
+#     'AWS_S3_REGION_NAME': 'eu-west-1',
+# }
+
+
+## This file can contain arbitrary Python code, e.g.:
+# from datetime import datetime
+# now = datetime.now().strftime("%d/%m/%Y %H:%M:%S")
+# BANNER_TOP = f'<marquee width="200px">This instance started on {now}.</marquee>'

From 75554ef5b48dbb67df5eacd76bb24f47c8ac7617 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Christian=20M=C3=A4der?= <mail@cimnine.ch>
Date: Tue, 20 Oct 2020 21:29:08 +0200
Subject: [PATCH 10/14] Consistency in namespace name

---
 docker/configuration.docker.py | 2 +-
 docker/ldap_config.docker.py   | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/docker/configuration.docker.py b/docker/configuration.docker.py
index a47c353..68a12e4 100644
--- a/docker/configuration.docker.py
+++ b/docker/configuration.docker.py
@@ -35,7 +35,7 @@ def _import(module_name, path):
 
 _main_config_path = abspath(f'{_CONFIG_DIR}/{_MAIN_CONFIG}.py')
 if isfile(_main_config_path):
-  _import(f'{_MODULE}.configuration', _main_config_path)
+  _import(f'{_MODULE}.{_MAIN_CONFIG}', _main_config_path)
 else:
   print(f"⚠️ Main configuration '{_main_config_path}' not found.")
 
diff --git a/docker/ldap_config.docker.py b/docker/ldap_config.docker.py
index 7248195..ca8329d 100644
--- a/docker/ldap_config.docker.py
+++ b/docker/ldap_config.docker.py
@@ -35,7 +35,7 @@ def _import(module_name, path):
 
 _main_config_path = abspath(f'{_CONFIG_DIR}/{_MAIN_CONFIG}.py')
 if isfile(_main_config_path):
-  _import(f'{_MODULE}.configuration', _main_config_path)
+  _import(f'{_MODULE}.{_MAIN_CONFIG}', _main_config_path)
 else:
   print(f"⚠️ Main configuration '{_main_config_path}' not found.")
 

From ec3fd8a7907f19d406c87d7e6ef954a39e8cd972 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Christian=20M=C3=A4der?= <mail@cimnine.ch>
Date: Tue, 20 Oct 2020 21:36:40 +0200
Subject: [PATCH 11/14] Revert accidential change to _read_secret order

---
 configuration/configuration.py    | 12 ++++++------
 configuration/ldap/ldap_config.py |  2 +-
 docker/configuration.docker.py    |  1 -
 docker/ldap_config.docker.py      |  1 -
 4 files changed, 7 insertions(+), 9 deletions(-)

diff --git a/configuration/configuration.py b/configuration/configuration.py
index 4d1a146..f111c19 100644
--- a/configuration/configuration.py
+++ b/configuration/configuration.py
@@ -41,7 +41,7 @@ ALLOWED_HOSTS = environ.get('ALLOWED_HOSTS', '*').split(' ')
 DATABASE = {
     'NAME': environ.get('DB_NAME', 'netbox'),            # Database name
     'USER': environ.get('DB_USER', ''),                  # PostgreSQL username
-    'PASSWORD': environ.get('DB_PASSWORD', _read_secret('db_password')),
+    'PASSWORD': _read_secret('db_password', environ.get('DB_PASSWORD', '')),
                                                          # PostgreSQL password
     'HOST': environ.get('DB_HOST', 'localhost'),         # Database server
     'PORT': environ.get('DB_PORT', ''),                  # Database port (leave blank for default)
@@ -58,14 +58,14 @@ REDIS = {
     'tasks': {
         'HOST': environ.get('REDIS_HOST', 'localhost'),
         'PORT': int(environ.get('REDIS_PORT', 6379)),
-        'PASSWORD': environ.get('REDIS_PASSWORD', _read_secret('redis_password')),
+        'PASSWORD': _read_secret('redis_password', environ.get('REDIS_PASSWORD', '')),
         'DATABASE': int(environ.get('REDIS_DATABASE', 0)),
         'SSL': environ.get('REDIS_SSL', 'False').lower() == 'true',
     },
     'caching': {
         'HOST': environ.get('REDIS_CACHE_HOST', environ.get('REDIS_HOST', 'localhost')),
         'PORT': int(environ.get('REDIS_CACHE_PORT', environ.get('REDIS_PORT', 6379))),
-        'PASSWORD': environ.get('REDIS_CACHE_PASSWORD', environ.get('REDIS_PASSWORD', _read_secret('redis_cache_password'))),
+        'PASSWORD': _read_secret('redis_cache_password', environ.get('REDIS_CACHE_PASSWORD', environ.get('REDIS_PASSWORD', ''))),
         'DATABASE': int(environ.get('REDIS_CACHE_DATABASE', 1)),
         'SSL': environ.get('REDIS_CACHE_SSL', environ.get('REDIS_SSL', 'False')).lower() == 'true',
     },
@@ -75,7 +75,7 @@ REDIS = {
 # For optimal security, SECRET_KEY should be at least 50 characters in length and contain a mix of letters, numbers, and
 # symbols. NetBox will not run without this defined. For more information, see
 # https://docs.djangoproject.com/en/stable/ref/settings/#std:setting-SECRET_KEY
-SECRET_KEY = environ.get('SECRET_KEY', _read_secret('secret_key'))
+SECRET_KEY = _read_secret('secret_key', environ.get('SECRET_KEY'))
 
 
 #########################
@@ -130,7 +130,7 @@ EMAIL = {
     'SERVER': environ.get('EMAIL_SERVER', 'localhost'),
     'PORT': int(environ.get('EMAIL_PORT', 25)),
     'USERNAME': environ.get('EMAIL_USERNAME', ''),
-    'PASSWORD': environ.get('EMAIL_PASSWORD', _read_secret('email_password')),
+    'PASSWORD': _read_secret('email_password', environ.get('EMAIL_PASSWORD', '')),
     'USE_SSL': environ.get('EMAIL_USE_SSL', 'False').lower() == 'true',
     'USE_TLS': environ.get('EMAIL_USE_TLS', 'False').lower() == 'true',
     'SSL_CERTFILE': environ.get('EMAIL_SSL_CERTFILE', ''),
@@ -176,7 +176,7 @@ METRICS_ENABLED = environ.get('METRICS_ENABLED', 'False').lower() == 'true'
 
 # Credentials that NetBox will uses to authenticate to devices when connecting via NAPALM.
 NAPALM_USERNAME = environ.get('NAPALM_USERNAME', '')
-NAPALM_PASSWORD = environ.get('NAPALM_PASSWORD', _read_secret('napalm_password'))
+NAPALM_PASSWORD = _read_secret('napalm_password', environ.get('NAPALM_PASSWORD', ''))
 
 # NAPALM timeout (in seconds). (Default: 30)
 NAPALM_TIMEOUT = int(environ.get('NAPALM_TIMEOUT', 30))
diff --git a/configuration/ldap/ldap_config.py b/configuration/ldap/ldap_config.py
index b92a79a..d1e4444 100644
--- a/configuration/ldap/ldap_config.py
+++ b/configuration/ldap/ldap_config.py
@@ -32,7 +32,7 @@ AUTH_LDAP_CONNECTION_OPTIONS = {
 
 # Set the DN and password for the NetBox service account.
 AUTH_LDAP_BIND_DN = environ.get('AUTH_LDAP_BIND_DN', '')
-AUTH_LDAP_BIND_PASSWORD = environ.get('AUTH_LDAP_BIND_PASSWORD', _read_secret('auth_ldap_bind_password'))
+AUTH_LDAP_BIND_PASSWORD = _read_secret('auth_ldap_bind_password', environ.get('AUTH_LDAP_BIND_PASSWORD', ''))
 
 # Set a string template that describes any user’s distinguished name based on the username.
 AUTH_LDAP_USER_DN_TEMPLATE = environ.get('AUTH_LDAP_USER_DN_TEMPLATE', None)
diff --git a/docker/configuration.docker.py b/docker/configuration.docker.py
index 68a12e4..1a3590d 100644
--- a/docker/configuration.docker.py
+++ b/docker/configuration.docker.py
@@ -54,7 +54,6 @@ with scandir(_CONFIG_DIR) as it:
       continue
 
     module_name = f"{_MODULE}.{f.name[:-len('.py')]}".replace(".", "_")
-
     _import(module_name, f.path)
 
 if len(_loaded_configurations) == 0:
diff --git a/docker/ldap_config.docker.py b/docker/ldap_config.docker.py
index ca8329d..45ffe7c 100644
--- a/docker/ldap_config.docker.py
+++ b/docker/ldap_config.docker.py
@@ -54,7 +54,6 @@ with scandir(_CONFIG_DIR) as it:
       continue
 
     module_name = f"{_MODULE}.{f.name[:-len('.py')]}".replace(".", "_")
-
     _import(module_name, f.path)
 
 if len(_loaded_configurations) == 0:

From d0c7b87925b5d876e0f7a8f1609686ffa9e061f5 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Christian=20M=C3=A4der?= <mail@cimnine.ch>
Date: Tue, 20 Oct 2020 21:40:14 +0200
Subject: [PATCH 12/14] Improve order in configuration.py

---
 configuration/configuration.py | 18 +++++-------------
 1 file changed, 5 insertions(+), 13 deletions(-)

diff --git a/configuration/configuration.py b/configuration/configuration.py
index f111c19..7d5477c 100644
--- a/configuration/configuration.py
+++ b/configuration/configuration.py
@@ -205,12 +205,11 @@ RACK_ELEVATION_DEFAULT_UNIT_HEIGHT = int(environ.get('RACK_ELEVATION_DEFAULT_UNI
 RACK_ELEVATION_DEFAULT_UNIT_WIDTH = int(environ.get('RACK_ELEVATION_DEFAULT_UNIT_WIDTH', 220))
 
 # Remote authentication support
-REMOTE_AUTH_ENABLED = False
-# REMOTE_AUTH_BACKEND = 'netbox.authentication.RemoteUserBackend'
-# REMOTE_AUTH_HEADER = 'HTTP_REMOTE_USER'
-# REMOTE_AUTH_AUTO_CREATE_USER = True
-# REMOTE_AUTH_DEFAULT_GROUPS = []
-# REMOTE_AUTH_DEFAULT_PERMISSIONS = {}
+REMOTE_AUTH_ENABLED = environ.get('REMOTE_AUTH_ENABLED', 'False').lower() == 'true'
+REMOTE_AUTH_BACKEND = environ.get('REMOTE_AUTH_BACKEND', 'netbox.authentication.RemoteUserBackend')
+REMOTE_AUTH_HEADER = environ.get('REMOTE_AUTH_HEADER', 'HTTP_REMOTE_USER')
+REMOTE_AUTH_AUTO_CREATE_USER = environ.get('REMOTE_AUTH_AUTO_CREATE_USER', 'True').lower() == 'true'
+REMOTE_AUTH_DEFAULT_GROUPS = list(filter(None, environ.get('REMOTE_AUTH_DEFAULT_GROUPS', '').split(' ')))
 
 # This determines how often the GitHub API is called to check the latest release of NetBox. Must be at least 1 hour.
 RELEASE_CHECK_TIMEOUT = int(environ.get('RELEASE_CHECK_TIMEOUT', 24 * 3600))
@@ -236,13 +235,6 @@ SCRIPTS_ROOT = environ.get('SCRIPTS_ROOT', '/etc/netbox/scripts')
 # database access.) Note that the user as which NetBox runs must have read and write permissions to this path.
 SESSION_FILE_PATH = environ.get('REPORTS_ROOT', None)
 
-# Remote authentication support
-REMOTE_AUTH_ENABLED = environ.get('REMOTE_AUTH_ENABLED', 'False').lower() == 'true'
-REMOTE_AUTH_BACKEND = environ.get('REMOTE_AUTH_BACKEND', 'netbox.authentication.RemoteUserBackend')
-REMOTE_AUTH_HEADER = environ.get('REMOTE_AUTH_HEADER', 'HTTP_REMOTE_USER')
-REMOTE_AUTH_AUTO_CREATE_USER = environ.get('REMOTE_AUTH_AUTO_CREATE_USER', 'True').lower() == 'true'
-REMOTE_AUTH_DEFAULT_GROUPS = list(filter(None, environ.get('REMOTE_AUTH_DEFAULT_GROUPS', '').split(' ')))
-
 # Time zone (default: UTC)
 TIME_ZONE = environ.get('TIME_ZONE', 'UTC')
 

From 2dba2b881131bc020724a9d95a84370bb94e9073 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Christian=20M=C3=A4der?= <mail@cimnine.ch>
Date: Tue, 20 Oct 2020 21:45:37 +0200
Subject: [PATCH 13/14] Fix default for secret_key in configuration.py

---
 configuration/configuration.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/configuration/configuration.py b/configuration/configuration.py
index 7d5477c..639e1b6 100644
--- a/configuration/configuration.py
+++ b/configuration/configuration.py
@@ -75,7 +75,7 @@ REDIS = {
 # For optimal security, SECRET_KEY should be at least 50 characters in length and contain a mix of letters, numbers, and
 # symbols. NetBox will not run without this defined. For more information, see
 # https://docs.djangoproject.com/en/stable/ref/settings/#std:setting-SECRET_KEY
-SECRET_KEY = _read_secret('secret_key', environ.get('SECRET_KEY'))
+SECRET_KEY = _read_secret('secret_key', environ.get('SECRET_KEY', ''))
 
 
 #########################

From 58050e5287f92ad8c6d2c3ce2126c047678063d9 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Christian=20Ma=CC=88der?= <mail@cimnine.ch>
Date: Mon, 26 Oct 2020 14:43:11 +0100
Subject: [PATCH 14/14] Merge core functionality into `configuration.py`

Which is the file `docker/configuration.docker.py` in our repo.
The common code is then imported by `docker/ldap_config.docker.py`.
---
 docker/configuration.docker.py | 112 +++++++++++++++++++--------------
 docker/ldap_config.docker.py   |  56 ++---------------
 2 files changed, 70 insertions(+), 98 deletions(-)

diff --git a/docker/configuration.docker.py b/docker/configuration.docker.py
index 1a3590d..e7a7c55 100644
--- a/docker/configuration.docker.py
+++ b/docker/configuration.docker.py
@@ -1,12 +1,73 @@
+## Generic Parts
+# These functions are providing the functionality to load
+# arbitrary configuration files.
+#
+# They can be imported by other code (see `ldap_config.py` for an example).
+
 from os.path import abspath, isfile
 from os import scandir
 import importlib.util
 import sys
 
-_CONFIG_DIR = '/etc/netbox/config/'
-_MAIN_CONFIG = 'configuration'
-_MODULE = 'netbox.configuration'
-_loaded_configurations = []
+def _filename(f):
+  return f.name
+
+
+def _import(module_name, path, loaded_configurations):
+  spec = importlib.util.spec_from_file_location('', path)
+  module = importlib.util.module_from_spec(spec)
+  spec.loader.exec_module(module)
+  sys.modules[module_name] = module
+
+  loaded_configurations.insert(0, module)
+
+  print(f"🧬 loaded config '{path}'")
+
+
+def read_configurations(config_module, config_dir, main_config):
+  loaded_configurations = []
+
+  main_config_path = abspath(f'{config_dir}/{main_config}.py')
+  if isfile(main_config_path):
+    _import(f'{config_module}.{main_config}', main_config_path, loaded_configurations)
+  else:
+    print(f"⚠️ Main configuration '{main_config_path}' not found.")
+
+  with scandir(config_dir) as it:
+    for f in sorted(it, key=_filename):
+      if not f.is_file():
+        continue
+
+      if f.name.startswith('__'):
+        continue
+
+      if not f.name.endswith('.py'):
+        continue
+
+      if f.name == f'{config_dir}.py':
+        continue
+
+      module_name = f"{config_module}.{f.name[:-len('.py')]}".replace(".", "_")
+      _import(module_name, f.path, loaded_configurations)
+
+  if len(loaded_configurations) == 0:
+    print(f"‼️ No configuration files found in '{config_dir}'.")
+    raise ImportError(f"No configuration files found in '{config_dir}'.")
+
+  return loaded_configurations
+
+
+## Specific Parts
+# This section's code actually loads the various configuration files
+# into the module with the given name.
+# It contains the logic to resolve arbitrary configuration options by
+# levaraging dynamic programming using `__getattr__`.
+
+
+_loaded_configurations = read_configurations(
+  config_dir = '/etc/netbox/config/',
+  config_module = 'netbox.configuration',
+  main_config = 'configuration')
 
 
 def __getattr__(name):
@@ -16,46 +77,3 @@ def __getattr__(name):
     except:
       pass
   raise AttributeError
-
-
-def _filename(f):
-  return f.name
-
-
-def _import(module_name, path):
-  spec = importlib.util.spec_from_file_location('', path)
-  module = importlib.util.module_from_spec(spec)
-  spec.loader.exec_module(module)
-  sys.modules[module_name] = module
-
-  _loaded_configurations.insert(0, module)
-
-  print(f"🧬 loaded config '{path}'")
-
-
-_main_config_path = abspath(f'{_CONFIG_DIR}/{_MAIN_CONFIG}.py')
-if isfile(_main_config_path):
-  _import(f'{_MODULE}.{_MAIN_CONFIG}', _main_config_path)
-else:
-  print(f"⚠️ Main configuration '{_main_config_path}' not found.")
-
-with scandir(_CONFIG_DIR) as it:
-  for f in sorted(it, key=_filename):
-    if not f.is_file():
-      continue
-
-    if f.name.startswith('__'):
-      continue
-
-    if not f.name.endswith('.py'):
-      continue
-
-    if f.name == f'{_MAIN_CONFIG}.py':
-      continue
-
-    module_name = f"{_MODULE}.{f.name[:-len('.py')]}".replace(".", "_")
-    _import(module_name, f.path)
-
-if len(_loaded_configurations) == 0:
-  print(f"‼️ No configuration files found in '{_CONFIG_DIR}'.")
-  raise ImportError(f"No configuration files found in '{_CONFIG_DIR}'.")
diff --git a/docker/ldap_config.docker.py b/docker/ldap_config.docker.py
index 45ffe7c..bcaf7e7 100644
--- a/docker/ldap_config.docker.py
+++ b/docker/ldap_config.docker.py
@@ -1,12 +1,9 @@
-from os.path import abspath, isfile
-from os import scandir
-import importlib.util
-import sys
+from .configuration import read_configurations
 
-_CONFIG_DIR = '/etc/netbox/config/ldap/'
-_MAIN_CONFIG = 'ldap_config'
-_MODULE = 'netbox.configuration.ldap'
-_loaded_configurations = []
+_loaded_configurations = read_configurations(
+  config_dir = '/etc/netbox/config/ldap/',
+  config_module = 'netbox.configuration.ldap',
+  main_config = 'ldap_config')
 
 
 def __getattr__(name):
@@ -16,46 +13,3 @@ def __getattr__(name):
     except:
       pass
   raise AttributeError
-
-
-def _filename(f):
-  return f.name
-
-
-def _import(module_name, path):
-  spec = importlib.util.spec_from_file_location('', path)
-  module = importlib.util.module_from_spec(spec)
-  spec.loader.exec_module(module)
-  sys.modules[module_name] = module
-
-  _loaded_configurations.insert(0, module)
-
-  print(f"🧬 loaded config '{path}'")
-
-
-_main_config_path = abspath(f'{_CONFIG_DIR}/{_MAIN_CONFIG}.py')
-if isfile(_main_config_path):
-  _import(f'{_MODULE}.{_MAIN_CONFIG}', _main_config_path)
-else:
-  print(f"⚠️ Main configuration '{_main_config_path}' not found.")
-
-with scandir(_CONFIG_DIR) as it:
-  for f in sorted(it, key=_filename):
-    if not f.is_file():
-      continue
-
-    if f.name.startswith('__'):
-      continue
-
-    if not f.name.endswith('.py'):
-      continue
-
-    if f.name == f'{_MAIN_CONFIG}.py':
-      continue
-
-    module_name = f"{_MODULE}.{f.name[:-len('.py')]}".replace(".", "_")
-    _import(module_name, f.path)
-
-if len(_loaded_configurations) == 0:
-  print(f"‼️ No configuration files found in '{_CONFIG_DIR}'.")
-  raise ImportError(f"No configuration files found in '{_CONFIG_DIR}'.")