pgadmin4/web/config.py

# -*- coding: utf-8 -*-

##########################################################################
#
# pgAdmin 4 - PostgreSQL Tools
#
# Copyright (C) 2013 - 2021, The pgAdmin Development Team
# This software is released under the PostgreSQL Licence
#
# config.py - Core application configuration settings
#
##########################################################################

import builtins
import logging
import os
import sys

# We need to include the root directory in sys.path to ensure that we can
# find everything we need when running in the standalone runtime.
root = os.path.dirname(os.path.realpath(__file__))
if sys.path[0] != root:
    sys.path.insert(0, root)

from pgadmin.utils import env, IS_WIN, fs_short_path

##########################################################################
# Application settings
##########################################################################

# Name of the application to display in the UI
APP_NAME = 'pgAdmin 4'
APP_ICON = 'pg-icon'

##########################################################################
# Application settings
##########################################################################

# NOTE!!!
# If you change any of APP_RELEASE, APP_REVISION or APP_SUFFIX, then you
# must also change APP_VERSION_INT to match.
#

# Application version number components
APP_RELEASE = 5
APP_REVISION = 2

# Application version suffix, e.g. 'beta1', 'dev'. Usually an empty string
# for GA releases.
APP_SUFFIX = ''

# Numeric application version for upgrade checks. Should be in the format:
# [X]XYYZZ, where X is the release version, Y is the revision, with a leading
# zero if needed, and Z represents the suffix, with a leading zero if needed
APP_VERSION_INT = 50200

# DO NOT CHANGE!
# The application version string, constructed from the components
if not APP_SUFFIX:
    APP_VERSION = '%s.%s' % (APP_RELEASE, APP_REVISION)
else:
    APP_VERSION = '%s.%s-%s' % (APP_RELEASE, APP_REVISION, APP_SUFFIX)

# Copyright string for display in the app
APP_COPYRIGHT = 'Copyright (C) 2013 - 2021, The pgAdmin Development Team'

##########################################################################
# Misc stuff
##########################################################################

# Path to the online help.
HELP_PATH = '../../../docs/en_US/_build/html/'

# Languages we support in the UI
LANGUAGES = {
    'en': 'English',
    'zh': 'Chinese (Simplified)',
    'cs': 'Czech',
    'fr': 'French',
    'de': 'German',
    'it': 'Italian',
    'ja': 'Japanese',
    'ko': 'Korean',
    'pl': 'Polish',
    'ru': 'Russian',
    'es': 'Spanish',
}

# DO NOT CHANGE UNLESS YOU KNOW WHAT YOU ARE DOING!
# List of modules to skip when dynamically loading
MODULE_BLACKLIST = ['test']

# DO NOT CHANGE UNLESS YOU KNOW WHAT YOU ARE DOING!
# List of treeview browser nodes to skip when dynamically loading
NODE_BLACKLIST = []

##########################################################################
# Server settings
##########################################################################

# The server mode determines whether or not we're running on a web server
# requiring user authentication, or desktop mode which uses an automatic
# default login.
#
# DO NOT DISABLE SERVER MODE IF RUNNING ON A WEBSERVER!!
#
# We only set SERVER_MODE if it's not already set. That's to allow the
# runtime to force it to False.
#
# NOTE: If you change the value of SERVER_MODE in an included config file,
#       you may also need to redefine any values below that are derived
#       from it, notably various paths such as LOG_FILE and anything
#       using DATA_DIR.

if (not hasattr(builtins, 'SERVER_MODE')) or builtins.SERVER_MODE is None:
    SERVER_MODE = True
else:
    SERVER_MODE = builtins.SERVER_MODE

# HTTP headers to search for CSRF token when it is not provided in the form.
# Default is ['X-CSRFToken', 'X-CSRF-Token']
WTF_CSRF_HEADERS = ['X-pgA-CSRFToken']

# User ID (email address) to use for the default user in desktop mode.
# The default should be fine here, as it's not exposed in the app.
DESKTOP_USER = 'pgadmin4@pgadmin.org'

# This option allows the user to host the application on a LAN
# Default hosting is on localhost (DEFAULT_SERVER='localhost').
# To host pgAdmin4 over LAN set DEFAULT_SERVER='0.0.0.0' (or a specific
# adaptor address.
#
# NOTE: This is NOT recommended for production use, only for debugging
# or testing. Production installations should be run as a WSGI application
# behind Apache HTTPD.
DEFAULT_SERVER = '127.0.0.1'

# The default port on which the app server will listen if not set in the
# environment by the runtime
DEFAULT_SERVER_PORT = 5050

# This param is used to override the default web server information about
# the web technology and the frameworks being used in the application
# An attacker could use this information to fingerprint underlying operating
# system and research known exploits for the specific version of
# software in use
WEB_SERVER = 'Python'

# Enable X-Frame-Option protection.
# Set to one of "SAMEORIGIN", "ALLOW-FROM origin" or "" to disable.
# Note that "DENY" is NOT supported (and will be silently ignored).
# See https://tools.ietf.org/html/rfc7034 for more info.
X_FRAME_OPTIONS = "SAMEORIGIN"

# The Content-Security-Policy header allows you to restrict how resources
# such as JavaScript, CSS, or pretty much anything that the browser loads.
# see https://content-security-policy.com/#source_list for more info
# e.g. "default-src https: data: 'unsafe-inline' 'unsafe-eval';"
CONTENT_SECURITY_POLICY = "default-src http: data: blob: 'unsafe-inline' " \
                          "'unsafe-eval';"

# STRICT_TRANSPORT_SECURITY_ENABLED when set to True will set the
# Strict-Transport-Security header
STRICT_TRANSPORT_SECURITY_ENABLED = False

# The Strict-Transport-Security header tells the browser to convert all HTTP
# requests to HTTPS, preventing man-in-the-middle (MITM) attacks.
# e.g. 'max-age=31536000; includeSubDomains'
STRICT_TRANSPORT_SECURITY = "max-age=31536000; includeSubDomains"

# The X-Content-Type-Options header forces the browser to honor the response
# content type instead of trying to detect it, which can be abused to
# generate a cross-site scripting (XSS) attack.
# e.g. nosniff
X_CONTENT_TYPE_OPTIONS = "nosniff"

# The browser will try to prevent reflected XSS attacks by not loading the
# page if the request contains something that looks like JavaScript and the
# response contains the same data. e.g. '1; mode=block'
X_XSS_PROTECTION = "1; mode=block"

# This param is used to validate ALLOWED_HOSTS for the application
# This will be used to avoid Host Header Injection attack
# ALLOWED_HOSTS = ['225.0.0.0/8', '226.0.0.0/7', '228.0.0.0/6']
# ALLOWED_HOSTS = ['127.0.0.1', '192.168.0.1']
# if ALLOWED_HOSTS= [] then it will accept all ips (and application will be
# vulnerable to Host Header Injection attack)
ALLOWED_HOSTS = []

# Hashing algorithm used for password storage
SECURITY_PASSWORD_HASH = 'pbkdf2_sha512'

# Reverse Proxy parameters
# You must tell the middleware how many proxies set each header
# so it knows what values to trust.
# See https://tinyurl.com/yyg7r9av
# for more information.

# Number of values to trust for X-Forwarded-For
PROXY_X_FOR_COUNT = 1

# Number of values to trust for X-Forwarded-Proto.
PROXY_X_PROTO_COUNT = 1

# Number of values to trust for X-Forwarded-Host.
PROXY_X_HOST_COUNT = 0

# Number of values to trust for X-Forwarded-Port.
PROXY_X_PORT_COUNT = 1

# Number of values to trust for X-Forwarded-Prefix.
PROXY_X_PREFIX_COUNT = 0

# NOTE: CSRF_SESSION_KEY, SECRET_KEY and SECURITY_PASSWORD_SALT are no
#       longer part of the main configuration, but are stored in the
#       configuration databases 'keys' table and are auto-generated.

# COMPRESSION
COMPRESS_MIMETYPES = [
    'text/html', 'text/css', 'text/xml', 'application/json',
    'application/javascript'
]
COMPRESS_LEVEL = 9
COMPRESS_MIN_SIZE = 500

# Set the cache control max age for static files in flask to 1 year
SEND_FILE_MAX_AGE_DEFAULT = 31556952

# This will be added to static urls as url parameter with value as
# APP_VERSION_INT for cache busting on version upgrade. If the value is set as
# None or empty string then it will not be added.
# eg - http:localhost:5050/pgadmin.css?intver=3.13
APP_VERSION_PARAM = 'ver'

# Add the internal version param to below extensions only
APP_VERSION_EXTN = ('.css', '.js', '.html', '.svg', '.png', '.gif', '.ico')

# Data directory for storage of config settings etc. This shouldn't normally
# need to be changed - it's here as various other settings depend on it.
# On Windows, we always store data in %APPDATA%\pgAdmin. On other platforms,
# if we're in server mode we use /var/lib/pgadmin, otherwise ~/.pgadmin
if IS_WIN:
    # Use the short path on windows
    DATA_DIR = os.path.realpath(
        os.path.join(fs_short_path(env('APPDATA')), "pgAdmin")
    )
else:
    if SERVER_MODE:
        DATA_DIR = '/var/lib/pgadmin'
    else:
        DATA_DIR = os.path.realpath(os.path.expanduser('~/.pgadmin/'))

# An optional login banner to show security warnings/disclaimers etc. at
# login and password recovery etc. HTML may be included for basic formatting,
# For example:
# LOGIN_BANNER = "<h4>Authorised Users Only!</h4>" \
#                "Unauthorised use is strictly forbidden."
LOGIN_BANNER = ""

##########################################################################
# Log settings
##########################################################################

# Debug mode?
DEBUG = False

# Application log level - one of:
#   CRITICAL 50
#   ERROR    40
#   WARNING  30
#   SQL      25
#   INFO     20
#   DEBUG    10
#   NOTSET    0
CONSOLE_LOG_LEVEL = logging.WARNING
FILE_LOG_LEVEL = logging.WARNING

# Log format.
CONSOLE_LOG_FORMAT = '%(asctime)s: %(levelname)s\t%(name)s:\t%(message)s'
FILE_LOG_FORMAT = '%(asctime)s: %(levelname)s\t%(name)s:\t%(message)s'

# Log file name. This goes in the data directory, except on non-Windows
# platforms in server mode.
if SERVER_MODE and not IS_WIN:
    LOG_FILE = '/var/log/pgadmin/pgadmin4.log'
else:
    LOG_FILE = os.path.join(DATA_DIR, 'pgadmin4.log')

##########################################################################
# Server Connection Driver Settings
##########################################################################

# The default driver used for making connection with PostgreSQL
PG_DEFAULT_DRIVER = 'psycopg2'

# Maximum allowed idle time in minutes before which releasing the connection
# for the particular session. (in minutes)
MAX_SESSION_IDLE_TIME = 60

##########################################################################
# User account and settings storage
##########################################################################

# The default path to the SQLite database used to store user accounts and
# settings. This default places the file in the same directory as this
# config file, but generates an absolute path for use througout the app.
SQLITE_PATH = env('SQLITE_PATH') or os.path.join(DATA_DIR, 'pgadmin4.db')

# SQLITE_TIMEOUT will define how long to wait before throwing the error -
# OperationError due to database lock. On slower system, you may need to change
# this to some higher value.
# (Default: 500 milliseconds)
SQLITE_TIMEOUT = 500

# Allow database connection passwords to be saved if the user chooses.
# Set to False to disable password saving.
ALLOW_SAVE_PASSWORD = True

# Maximum number of history queries stored per user/server/database
MAX_QUERY_HIST_STORED = 20

##########################################################################
# Server-side session storage path
#
# SESSION_DB_PATH (Default: $HOME/.pgadmin4/sessions)
##########################################################################
#
# We use SQLite for server-side session storage. There will be one
# SQLite database object per session created.
#
# Specify the path used to store your session objects.
#
# If the specified directory does not exist, the setup script will create
# it with permission mode 700 to keep the session database secure.
#
# On certain systems, you can use shared memory (tmpfs) for maximum
# scalability, for example, on Ubuntu:
#
# SESSION_DB_PATH = '/run/shm/pgAdmin4_session'
#
##########################################################################
SESSION_DB_PATH = os.path.join(DATA_DIR, 'sessions')

SESSION_COOKIE_NAME = 'pga4_session'

##########################################################################
# Mail server settings
##########################################################################

# These settings are used when running in web server mode for confirming
# and resetting passwords etc.
# See: http://pythonhosted.org/Flask-Mail/ for more info
MAIL_SERVER = 'localhost'
MAIL_PORT = 25
MAIL_USE_SSL = False
MAIL_USE_TLS = False
MAIL_USERNAME = ''
MAIL_PASSWORD = ''
MAIL_DEBUG = False

# Flask-Security overrides Flask-Mail's MAIL_DEFAULT_SENDER setting, so
# that should be set as such:
SECURITY_EMAIL_SENDER = 'no-reply@localhost'

##########################################################################
# Mail content settings
##########################################################################

# These settings define the content of password reset emails
SECURITY_EMAIL_SUBJECT_PASSWORD_RESET = "Password reset instructions for %s" \
                                        % APP_NAME
SECURITY_EMAIL_SUBJECT_PASSWORD_NOTICE = "Your %s password has been reset" \
                                         % APP_NAME
SECURITY_EMAIL_SUBJECT_PASSWORD_CHANGE_NOTICE = \
    "Your password for %s has been changed" % APP_NAME

##########################################################################
# Upgrade checks
##########################################################################

# Check for new versions of the application?
UPGRADE_CHECK_ENABLED = True

# Where should we get the data from?
UPGRADE_CHECK_URL = 'https://www.pgadmin.org/versions.json'

# What key should we look at in the upgrade data file?
UPGRADE_CHECK_KEY = 'pgadmin4'

# Which CA file should we use?
# Default to cacert.pem in the same directory as config.py et al.
CA_FILE = os.path.join(os.path.dirname(os.path.realpath(__file__)),
                       "cacert.pem")

# Check if the detected browser is supported
CHECK_SUPPORTED_BROWSER = True

##########################################################################
# Storage Manager storage url config settings
# If user sets STORAGE_DIR to empty it will show all volumes if platform
# is Windows, '/' if it is Linux, Mac or any other unix type system.

# For example:
# 1. STORAGE_DIR = get_drive("C") or get_drive() # return C:/ by default
# where C can be any drive character such as "D", "E", "G" etc
# 2. Set path manually like
# STORAGE_DIR = "/path/to/directory/"
##########################################################################
STORAGE_DIR = os.path.join(DATA_DIR, 'storage')

##########################################################################
# Default locations for binary utilities (pg_dump, pg_restore etc)
#
# These are intentionally left empty in the main config file, but are
# expected to be overridden by packagers in config_distro.py.
#
# A default location can be specified for each database driver ID, in
# a dictionary. Either an absolute or relative path can be specified.
# In cases where it may be difficult to know what the working directory
# is, "$DIR" can be specified. This will be replaced with the path to the
# top-level pgAdmin4.py file. For example, on macOS we might use:
#
# $DIR/../../SharedSupport
#
##########################################################################
DEFAULT_BINARY_PATHS = {
    "pg": "",
    "ppas": "",
    "gpdb": ""
}

##########################################################################
# Test settings - used primarily by the regression suite, not for users
##########################################################################

# The default path for SQLite database for testing
TEST_SQLITE_PATH = os.path.join(DATA_DIR, 'test_pgadmin4.db')

##########################################################################
# Allows flask application to response to the each request asynchronously
##########################################################################
THREADED_MODE = True

##########################################################################
# Do not allow SQLALCHEMY to track modification as it is going to be
# deprecated in future
##########################################################################
SQLALCHEMY_TRACK_MODIFICATIONS = False

##########################################################################
# Number of records to fetch in one batch in query tool when query result
# set is large.
##########################################################################
ON_DEMAND_RECORD_COUNT = 1000

##########################################################################
# Allow users to display Gravatar image for their username in Server mode
##########################################################################
SHOW_GRAVATAR_IMAGE = True

##########################################################################
# Set cookie path and options
##########################################################################
COOKIE_DEFAULT_PATH = '/'
COOKIE_DEFAULT_DOMAIN = None
SESSION_COOKIE_DOMAIN = None
SESSION_COOKIE_SAMESITE = 'Lax'
SESSION_COOKIE_SECURE = False
SESSION_COOKIE_HTTPONLY = True

#########################################################################
# Skip storing session in files and cache for specific paths
#########################################################################
SESSION_SKIP_PATHS = [
    '/misc/ping'
]

##########################################################################
# Session expiration support
##########################################################################
# SESSION_EXPIRATION_TIME is the interval in Days. Session will be
# expire after the specified number of *days*.
SESSION_EXPIRATION_TIME = 1

# CHECK_SESSION_FILES_INTERVAL is interval in Hours. Application will check
# the session files for cleanup after specified number of *hours*.
CHECK_SESSION_FILES_INTERVAL = 24

# USER_INACTIVITY_TIMEOUT is interval in Seconds. If the pgAdmin screen is left
# unattended for <USER_INACTIVITY_TIMEOUT> seconds then the user will
# be logged out. When set to 0, the timeout will be disabled.
# If pgAdmin doesn't detect any activity in the time specified (in seconds),
# the user will be forcibly logged out from pgAdmin. Set to zero to disable
# the timeout.
# Note: This is applicable only for SERVER_MODE=True.
USER_INACTIVITY_TIMEOUT = 0

# OVERRIDE_USER_INACTIVITY_TIMEOUT when set to True will override
# USER_INACTIVITY_TIMEOUT when long running queries in the Query Tool
# or Debugger are running. When the queries complete, the inactivity timer
# will restart in this case. If set to False, user inactivity may cause
# transactions or in-process debugging sessions to be aborted.
OVERRIDE_USER_INACTIVITY_TIMEOUT = True

##########################################################################
# SSH Tunneling supports only for Python 2.7 and 3.4+
##########################################################################
SUPPORT_SSH_TUNNEL = True
# Allow SSH Tunnel passwords to be saved if the user chooses.
# Set to False to disable password saving.
ALLOW_SAVE_TUNNEL_PASSWORD = False

##########################################################################
# Master password is used to encrypt/decrypt saved server passwords
# Applicable for desktop mode only
##########################################################################
MASTER_PASSWORD_REQUIRED = True

##########################################################################
# Allows pgAdmin4 to create session cookies based on IP address, so even
# if a cookie is stolen, the attacker will not be able to connect to the
# server using that stolen cookie.
# Note: This can cause problems when the server is deployed in dynamic IP
# address hosting environments, such as Kubernetes or behind load
# balancers. In such cases, this option should be set to False.
##########################################################################
ENHANCED_COOKIE_PROTECTION = True

##########################################################################
# External Authentication Sources
##########################################################################

# Default setting is internal
# External Supported Sources: ldap, kerberos
# Multiple authentication can be achieved by setting this parameter to
# ['ldap', 'internal']. pgAdmin will authenticate the user with ldap first,
# in case of failure internal authentication will be done.

AUTHENTICATION_SOURCES = ['internal']

##########################################################################
# LDAP Configuration
##########################################################################

# After ldap authentication, user will be added into the SQLite database
# automatically, if set to True.
# Set it to False, if user should not be added automatically,
# in this case Admin has to add the user manually in the SQLite database.
LDAP_AUTO_CREATE_USER = True

# Connection timeout
LDAP_CONNECTION_TIMEOUT = 10

# Server connection details (REQUIRED)
# example: ldap://<ip-address>:<port> or ldap://<hostname>:<port>
LDAP_SERVER_URI = 'ldap://<ip-address>:<port>'

# The LDAP attribute containing user names. In OpenLDAP, this may be 'uid'
# whilst in AD, 'sAMAccountName' might be appropriate. (REQUIRED)
LDAP_USERNAME_ATTRIBUTE = '<User-id>'

##########################################################################
# 3 ways to configure LDAP as follows (Choose anyone):

# 1. Dedicated User binding

# LDAP Bind User DN Example: cn=username,dc=example,dc=com
# Set this parameter to allow the connection to bind using a dedicated user.
# After the connection is made, the pgadmin login user will be further
# authenticated by the username and password provided
# at the login screen.
LDAP_BIND_USER = None

# LDAP Bind User Password
LDAP_BIND_PASSWORD = None

# OR ####################
# 2. Anonymous Binding

# Set this parameter to allow the anonymous bind.
# After the connection is made, the pgadmin login user will be further
# authenticated by the username and password provided

LDAP_ANONYMOUS_BIND = False

# OR ####################
# 3. Bind as pgAdmin user

# BaseDN (REQUIRED)
# AD example:
# (&(objectClass=user)(memberof=CN=MYGROUP,CN=Users,dc=example,dc=com))
# OpenLDAP example: CN=Users,dc=example,dc=com
LDAP_BASE_DN = '<Base-DN>'

##########################################################################

# Search ldap for further authentication (REQUIRED)
# It can be optional while bind as pgAdmin user
LDAP_SEARCH_BASE_DN = '<Search-Base-DN>'

# Filter string for the user search.
# For OpenLDAP, '(cn=*)' may well be enough.
# For AD, you might use '(objectClass=user)' (REQUIRED)
LDAP_SEARCH_FILTER = '(objectclass=*)'

# Search scope for users (one of BASE, LEVEL or SUBTREE)
LDAP_SEARCH_SCOPE = 'SUBTREE'

# Use TLS? If the URI scheme is ldaps://, this is ignored.
LDAP_USE_STARTTLS = False

# TLS/SSL certificates. Specify if required, otherwise leave empty
LDAP_CA_CERT_FILE = ''
LDAP_CERT_FILE = ''
LDAP_KEY_FILE = ''


##########################################################################
# Kerberos Configuration
##########################################################################

KRB_APP_HOST_NAME = DEFAULT_SERVER

# If the default_keytab_name is not set in krb5.conf or
# the KRB_KTNAME environment variable is not set then, explicitly set
# the Keytab file

KRB_KTNAME = '<KRB5_KEYTAB_FILE>'

# After kerberos authentication, user will be added into the SQLite database
# automatically, if set to True.
# Set it to False, if user should not be added automatically,
# in this case Admin has to add the user manually in the SQLite database.

KRB_AUTO_CREATE_USER = True

KERBEROS_CCACHE_DIR = os.path.join(DATA_DIR, 'krbccache')


##########################################################################
# Local config settings
##########################################################################

# Load distribution-specific config overrides
try:
    from config_distro import *
except ImportError:
    pass

# Load local config overrides
try:
    from config_local import *
except ImportError:
    pass

# Load system config overrides. We do this last, so that the sysadmin can
# override anything they want from a config file that's in a protected system
# directory and away from pgAdmin to avoid invalidating signatures.
system_config_dir = '/etc/pgadmin'
if sys.platform.startswith('win32'):
    system_config_dir = os.environ['CommonProgramFiles'] + '/pgadmin'
elif sys.platform.startswith('darwin'):
    system_config_dir = '/Library/Preferences/pgadmin'

if os.path.exists(system_config_dir + '/config_system.py'):
    try:
        sys.path.insert(0, system_config_dir)
        from config_system import *
    except ImportError:
        pass

# Override DEFAULT_SERVER value from environment variable.
if 'PGADMIN_CONFIG_DEFAULT_SERVER' in os.environ:
    DEFAULT_SERVER = os.environ['PGADMIN_CONFIG_DEFAULT_SERVER']

# Disable USER_INACTIVITY_TIMEOUT when SERVER_MODE=False
if not SERVER_MODE:
    USER_INACTIVITY_TIMEOUT = 0