|
|
# acl.py - changeset access control for mercurial
|
|
|
#
|
|
|
# Copyright 2006 Vadim Gelfer <vadim.gelfer@gmail.com>
|
|
|
#
|
|
|
# This software may be used and distributed according to the terms
|
|
|
# of the GNU General Public License, incorporated herein by reference.
|
|
|
#
|
|
|
# this hook allows to allow or deny access to parts of a repo when
|
|
|
# taking incoming changesets.
|
|
|
#
|
|
|
# authorization is against local user name on system where hook is
|
|
|
# run, not committer of original changeset (since that is easy to
|
|
|
# spoof).
|
|
|
#
|
|
|
# acl hook is best to use if you use hgsh to set up restricted shells
|
|
|
# for authenticated users to only push to / pull from. not safe if
|
|
|
# user has interactive shell access, because they can disable hook.
|
|
|
# also not safe if remote users share one local account, because then
|
|
|
# no way to tell remote users apart.
|
|
|
#
|
|
|
# to use, configure acl extension in hgrc like this:
|
|
|
#
|
|
|
# [extensions]
|
|
|
# hgext.acl =
|
|
|
#
|
|
|
# [hooks]
|
|
|
# pretxnchangegroup.acl = python:hgext.acl.hook
|
|
|
#
|
|
|
# [acl]
|
|
|
# sources = serve # check if source of incoming changes in this list
|
|
|
# # ("serve" == ssh or http, "push", "pull", "bundle")
|
|
|
#
|
|
|
# allow and deny lists have subtree pattern (default syntax is glob)
|
|
|
# on left, user names on right. deny list checked before allow list.
|
|
|
#
|
|
|
# [acl.allow]
|
|
|
# # if acl.allow not present, all users allowed by default
|
|
|
# # empty acl.allow = no users allowed
|
|
|
# docs/** = doc_writer
|
|
|
# .hgtags = release_engineer
|
|
|
#
|
|
|
# [acl.deny]
|
|
|
# # if acl.deny not present, no users denied by default
|
|
|
# # empty acl.deny = all users allowed
|
|
|
# glob pattern = user4, user5
|
|
|
# ** = user6
|
|
|
|
|
|
from mercurial.demandload import *
|
|
|
from mercurial.i18n import gettext as _
|
|
|
from mercurial.node import *
|
|
|
demandload(globals(), 'getpass mercurial:util')
|
|
|
|
|
|
class checker(object):
|
|
|
'''acl checker.'''
|
|
|
|
|
|
def buildmatch(self, key):
|
|
|
'''return tuple of (match function, list enabled).'''
|
|
|
if not self.ui.has_config(key):
|
|
|
self.ui.debug(_('acl: %s not enabled\n') % key)
|
|
|
return None, False
|
|
|
|
|
|
thisuser = self.getuser()
|
|
|
pats = [pat for pat, users in self.ui.configitems(key)
|
|
|
if thisuser in users.replace(',', ' ').split()]
|
|
|
self.ui.debug(_('acl: %s enabled, %d entries for user %s\n') %
|
|
|
(key, len(pats), thisuser))
|
|
|
if pats:
|
|
|
match = util.matcher(self.repo.root, names=pats)[1]
|
|
|
else:
|
|
|
match = util.never
|
|
|
return match, True
|
|
|
|
|
|
def getuser(self):
|
|
|
'''return name of authenticated user.'''
|
|
|
return self.user
|
|
|
|
|
|
def __init__(self, ui, repo):
|
|
|
self.ui = ui
|
|
|
self.repo = repo
|
|
|
self.user = getpass.getuser()
|
|
|
cfg = self.ui.config('acl', 'config')
|
|
|
if cfg:
|
|
|
self.ui.readsections(cfg, 'acl.allow', 'acl.deny')
|
|
|
self.allow, self.allowable = self.buildmatch('acl.allow')
|
|
|
self.deny, self.deniable = self.buildmatch('acl.deny')
|
|
|
|
|
|
def skipsource(self, source):
|
|
|
'''true if incoming changes from this source should be skipped.'''
|
|
|
ok_sources = self.ui.config('acl', 'sources', 'serve').split()
|
|
|
return source not in ok_sources
|
|
|
|
|
|
def check(self, node):
|
|
|
'''return if access allowed, raise exception if not.'''
|
|
|
files = self.repo.changelog.read(node)[3]
|
|
|
if self.deniable:
|
|
|
for f in files:
|
|
|
if self.deny(f):
|
|
|
self.ui.debug(_('acl: user %s denied on %s\n') %
|
|
|
(self.getuser(), f))
|
|
|
raise util.Abort(_('acl: access denied for changeset %s') %
|
|
|
short(node))
|
|
|
if self.allowable:
|
|
|
for f in files:
|
|
|
if not self.allow(f):
|
|
|
self.ui.debug(_('acl: user %s not allowed on %s\n') %
|
|
|
(self.getuser(), f))
|
|
|
raise util.Abort(_('acl: access denied for changeset %s') %
|
|
|
short(node))
|
|
|
self.ui.debug(_('acl: allowing changeset %s\n') % short(node))
|
|
|
|
|
|
def hook(ui, repo, hooktype, node=None, source=None, **kwargs):
|
|
|
if hooktype != 'pretxnchangegroup':
|
|
|
raise util.Abort(_('config error - hook type "%s" cannot stop '
|
|
|
'incoming changesets') % hooktype)
|
|
|
|
|
|
c = checker(ui, repo)
|
|
|
if c.skipsource(source):
|
|
|
ui.debug(_('acl: changes have source "%s" - skipping\n') % source)
|
|
|
return
|
|
|
|
|
|
start = repo.changelog.rev(bin(node))
|
|
|
end = repo.changelog.count()
|
|
|
for rev in xrange(start, end):
|
|
|
c.check(repo.changelog.node(rev))
|
|
|
|
