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64 lines
2.6 KiB
Python
64 lines
2.6 KiB
Python
"""
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permissions.py - Permissions Abstraction for PyLink IRC Services.
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"""
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from collections import defaultdict
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import threading
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# Global variables: these store mappings of hostmasks/exttargets to lists of permissions each target has.
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default_permissions = defaultdict(set)
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from pylinkirc import conf, utils
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from pylinkirc.log import log
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def add_default_permissions(perms):
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"""Adds default permissions to the index."""
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global default_permissions
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for target, permlist in perms.items():
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default_permissions[target] |= set(permlist)
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addDefaultPermissions = add_default_permissions
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def remove_default_permissions(perms):
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"""Remove default permissions from the index."""
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global default_permissions
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for target, permlist in perms.items():
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default_permissions[target] -= set(permlist)
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removeDefaultPermissions = remove_default_permissions
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def check_permissions(irc, uid, perms, also_show=[]):
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"""
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Checks permissions of the caller. If the caller has any of the permissions listed in perms,
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this function returns True. Otherwise, NotAuthorizedError is raised.
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"""
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# For old (< 1.1 login blocks):
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# If the user is logged in, they automatically have all permissions.
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if irc.match_host('$pylinkacc', uid) and conf.conf['login'].get('user'):
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log.debug('permissions: overriding permissions check for old-style admin user %s',
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irc.get_hostmask(uid))
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return True
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permissions = defaultdict(set)
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# Enumerate the configured permissions list.
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for k, v in (conf.conf.get('permissions') or {}).items():
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permissions[k] |= set(v)
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# Merge in default permissions if enabled.
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if conf.conf.get('permissions_merge_defaults', True):
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for k, v in default_permissions.items():
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permissions[k] |= v
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for host, permlist in permissions.items():
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log.debug('permissions: permlist for %s: %s', host, permlist)
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if irc.match_host(host, uid):
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# Now, iterate over all the perms we are looking for.
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for perm in permlist:
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# Use irc.match_host to expand globs in an IRC-case insensitive and wildcard
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# friendly way. e.g. 'xyz.*.#Channel\' will match 'xyz.manage.#channel|' on IRCds
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# using the RFC1459 casemapping.
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log.debug('permissions: checking if %s glob matches anything in %s', perm, permlist)
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if any(irc.match_host(perm, p) for p in perms):
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return True
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raise utils.NotAuthorizedError("You are missing one of the following permissions: %s" %
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(', '.join(perms+also_show)))
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checkPermissions = check_permissions
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