mirror of
https://github.com/jlu5/PyLink.git
synced 2024-12-25 04:02:45 +01:00
112 lines
4.4 KiB
Python
112 lines
4.4 KiB
Python
"""
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conf.py - PyLink configuration core.
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This module is used to access the configuration of the current PyLink instance.
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It provides simple checks for validating and loading YAML-format configurations from arbitrary files.
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"""
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try:
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import yaml
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except ImportError:
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raise ImportError("PyLink requires PyYAML to function; please install it and try again.")
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import sys
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import os.path
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from collections import defaultdict
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from . import world
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class ConfigValidationError(Exception):
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"""Error when config conditions aren't met."""
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conf = {'bot':
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{
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'nick': 'PyLink',
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'user': 'pylink',
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'realname': 'PyLink Service Client',
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'serverdesc': 'Unconfigured PyLink'
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},
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'logging':
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{
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'stdout': 'INFO'
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},
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'servers':
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# Wildcard defaultdict! This means that
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# any network name you try will work and return
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# this basic template:
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defaultdict(lambda: {'ip': '0.0.0.0',
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'port': 7000,
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'recvpass': "unconfigured",
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'sendpass': "unconfigured",
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'protocol': "null",
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'hostname': "pylink.unconfigured",
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'sid': "000",
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'maxnicklen': 20,
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'sidrange': '0##'
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})
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}
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confname = 'unconfigured'
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def validate(condition, errmsg):
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"""Convenience function to validate conditions in validateConf()."""
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if not condition:
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raise ConfigValidationError(errmsg)
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def validateConf(conf, logger=None):
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"""Validates a parsed configuration dict."""
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validate(type(conf) == dict,
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"Invalid configuration given: should be type dict, not %s."
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% type(conf).__name__)
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for section in ('bot', 'servers', 'login', 'logging'):
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validate(conf.get(section),"Missing %r section in config." % section)
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# Make sure at least one form of authentication is valid.
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# Also we'll warn them that login:user/login:password is deprecated
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if conf['login'].get('password') or conf['login'].get('user'):
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e = "The 'login:user' and 'login:password' options are deprecated since PyLink 1.1. " \
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"Please switch to the new 'login:accounts' format as outlined in the example config."
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if logger:
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logger.warning(e)
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else:
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# FIXME: we need a better fallback when log isn't available on first
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# start.
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print('WARNING: %s' % e)
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old_login_valid = type(conf['login'].get('password')) == type(conf['login'].get('user')) == str
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newlogins = conf['login'].get('accounts', {})
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validate(old_login_valid or newlogins, "No accounts were set, aborting!")
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for account, block in newlogins.items():
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validate(type(account) == str, "Bad username format %s" % account)
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validate(type(block.get('password')) == str, "Bad password %s for account %s" % (block.get('password'), account))
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validate(conf['login'].get('password') != "changeme", "You have not set the login details correctly!")
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if newlogins and not old_login_valid:
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validate(conf.get('permissions'), "New-style accounts enabled but no permissions block was found. You will not be able to administrate your PyLink instance!")
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return conf
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def loadConf(filename, errors_fatal=True, logger=None):
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"""Loads a PyLink configuration file from the filename given."""
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global confname, conf, fname
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# Note: store globally the last loaded conf filename, for REHASH in coremods/control.
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fname = filename
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# For the internal config name, strip off any .yml extensions and absolute paths
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confname = os.path.basename(filename).split('.', 1)[0]
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try:
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with open(filename, 'r') as f:
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conf = yaml.load(f)
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conf = validateConf(conf, logger=logger)
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except Exception as e:
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print('ERROR: Failed to load config from %r: %s: %s' % (filename, type(e).__name__, e), file=sys.stderr)
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print(' Users upgrading from users < 0.9-alpha1 should note that the default configuration has been renamed to *pylink.yml*, not *config.yml*', file=sys.stderr)
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if errors_fatal:
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sys.exit(4)
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raise
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else:
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return conf
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