radicale_plugins/radicale/config.py

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2018-04-10 17:57:45 +00:00
# This file is part of Radicale Server - Calendar Server
# Copyright © 2008-2017 Guillaume Ayoub
# Copyright © 2008 Nicolas Kandel
# Copyright © 2008 Pascal Halter
#
# This library is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with Radicale. If not, see <http://www.gnu.org/licenses/>.
"""
Radicale configuration module.
Give a configparser-like interface to read and write configuration.
"""
import math
import os
from collections import OrderedDict
from configparser import RawConfigParser as ConfigParser
from . import auth, rights, storage, web
def positive_int(value):
value = int(value)
if value < 0:
raise ValueError("value is negative: %d" % value)
return value
def positive_float(value):
value = float(value)
if not math.isfinite(value):
raise ValueError("value is infinite")
if math.isnan(value):
raise ValueError("value is not a number")
if value < 0:
raise ValueError("value is negative: %f" % value)
return value
# Default configuration
INITIAL_CONFIG = OrderedDict([
("server", OrderedDict([
("hosts", {
"value": "127.0.0.1:5232",
"help": "set server hostnames including ports",
"aliases": ["-H", "--hosts"],
"type": str}),
("daemon", {
"value": "False",
"help": "launch as daemon",
"aliases": ["-d", "--daemon"],
"opposite": ["-f", "--foreground"],
"type": bool}),
("pid", {
"value": "",
"help": "set PID filename for daemon mode",
"aliases": ["-p", "--pid"],
"type": str}),
("max_connections", {
"value": "20",
"help": "maximum number of parallel connections",
"type": positive_int}),
("max_content_length", {
"value": "10000000",
"help": "maximum size of request body in bytes",
"type": positive_int}),
("timeout", {
"value": "10",
"help": "socket timeout",
"type": positive_int}),
("ssl", {
"value": "False",
"help": "use SSL connection",
"aliases": ["-s", "--ssl"],
"opposite": ["-S", "--no-ssl"],
"type": bool}),
("certificate", {
"value": "/etc/ssl/radicale.cert.pem",
"help": "set certificate file",
"aliases": ["-c", "--certificate"],
"type": str}),
("key", {
"value": "/etc/ssl/radicale.key.pem",
"help": "set private key file",
"aliases": ["-k", "--key"],
"type": str}),
("certificate_authority", {
"value": "",
"help": "set CA certificate for validating clients",
"aliases": ["--certificate-authority"],
"type": str}),
("protocol", {
"value": "PROTOCOL_TLSv1_2",
"help": "SSL protocol used",
"type": str}),
("ciphers", {
"value": "",
"help": "available ciphers",
"type": str}),
("dns_lookup", {
"value": "True",
"help": "use reverse DNS to resolve client address in logs",
"type": bool}),
("realm", {
"value": "Radicale - Password Required",
"help": "message displayed when a password is needed",
"type": str})])),
("encoding", OrderedDict([
("request", {
"value": "utf-8",
"help": "encoding for responding requests",
"type": str}),
("stock", {
"value": "utf-8",
"help": "encoding for storing local collections",
"type": str})])),
("auth", OrderedDict([
("type", {
"value": "none",
"help": "authentication method",
"type": str,
"internal": auth.INTERNAL_TYPES}),
("htpasswd_filename", {
"value": "/etc/radicale/users",
"help": "htpasswd filename",
"type": str}),
("htpasswd_encryption", {
"value": "bcrypt",
"help": "htpasswd encryption method",
"type": str}),
("delay", {
"value": "1",
"help": "incorrect authentication delay",
"type": positive_float})])),
("rights", OrderedDict([
("type", {
"value": "owner_only",
"help": "rights backend",
"type": str,
"internal": rights.INTERNAL_TYPES}),
("file", {
"value": "/etc/radicale/rights",
"help": "file for rights management from_file",
"type": str})])),
("storage", OrderedDict([
("type", {
"value": "multifilesystem",
"help": "storage backend",
"type": str,
"internal": storage.INTERNAL_TYPES}),
("filesystem_folder", {
"value": os.path.expanduser(
"/var/lib/radicale/collections"),
"help": "path where collections are stored",
"type": str}),
("max_sync_token_age", {
"value": 2592000, # 30 days
"help": "delete sync token that are older",
"type": int}),
("filesystem_fsync", {
"value": "True",
"help": "sync all changes to filesystem during requests",
"type": bool}),
("filesystem_locking", {
"value": "True",
"help": "lock the storage while accessing it",
"type": bool}),
("filesystem_close_lock_file", {
"value": "False",
"help": "close the lock file when no more clients are waiting",
"type": bool}),
("hook", {
"value": "",
"help": "command that is run after changes to storage",
"type": str})])),
("web", OrderedDict([
("type", {
"value": "internal",
"help": "web interface backend",
"type": str,
"internal": web.INTERNAL_TYPES})])),
("logging", OrderedDict([
("config", {
"value": "",
"help": "logging configuration file",
"type": str}),
("debug", {
"value": "False",
"help": "print debug information",
"aliases": ["-D", "--debug"],
"type": bool}),
("full_environment", {
"value": "False",
"help": "store all environment variables",
"type": bool}),
("mask_passwords", {
"value": "True",
"help": "mask passwords in logs",
"type": bool})]))])
def load(paths=(), extra_config=None, ignore_missing_paths=True):
config = ConfigParser()
for section, values in INITIAL_CONFIG.items():
config.add_section(section)
for key, data in values.items():
config.set(section, key, data["value"])
if extra_config:
for section, values in extra_config.items():
for key, value in values.items():
config.set(section, key, value)
for path in paths:
if path or not ignore_missing_paths:
try:
if not config.read(path) and not ignore_missing_paths:
raise RuntimeError("No such file: %r" % path)
except Exception as e:
raise RuntimeError(
"Failed to load config file %r: %s" % (path, e)) from e
# Check the configuration
for section in config.sections():
if section == "headers":
continue
if section not in INITIAL_CONFIG:
raise RuntimeError("Invalid section %r in config" % section)
allow_extra_options = ("type" in INITIAL_CONFIG[section] and
config.get(section, "type") not in
INITIAL_CONFIG[section]["type"].get("internal",
()))
for option in config[section]:
if option not in INITIAL_CONFIG[section]:
if allow_extra_options:
continue
raise RuntimeError("Invalid option %r in section %r in "
"config" % (option, section))
type_ = INITIAL_CONFIG[section][option]["type"]
try:
if type_ == bool:
config.getboolean(section, option)
else:
type_(config.get(section, option))
except Exception as e:
raise RuntimeError(
"Invalid %s value for option %r in section %r in config: "
"%r" % (type_.__name__, option, section,
config.get(section, option))) from e
return config