src/access.py
author Paul Crowley <paul@lshift.net>
Fri, 06 Mar 2009 08:56:48 +0000
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Change intro to README and linewrap at column 75
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# Copyright 2008-2009 LShift Ltd
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# Copyright 2006 Vadim Gelfer <vadim.gelfer@gmail.com>
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#
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# Authors:
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# Paul Crowley <paul@lshift.net>
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# Vadim Gelfer <vadim.gelfer@gmail.com>
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#
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# This software may be used and distributed according to the terms
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# of the GNU General Public License, incorporated herein by reference.
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from mercurial.i18n import _
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import mercurial.util
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import mercurial.node
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import os
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import ruleset
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import changes
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class Checker(object):
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    '''acl checker.'''
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    def __init__(self, ui, repo):
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        self.ui = ui
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        self.repo = repo
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        self.rules = ruleset.rules_from_env()
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        self.rules.set(user = os.environ['REMOTE_USER'])
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        self.rules.set(repo = os.environ['HG_REPO_PATH'])
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    def allow(self, ctx):
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        branch = ctx.branch()
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        if not self.rules.allow("write", branch=branch, file=None):
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            return False
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        for f in ctx.files():
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            if not self.rules.allow("write", branch=branch, file=f):
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                return False
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        return True
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    def check(self, ctx):
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        '''return if access allowed, raise exception if not.'''
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        if not self.allow(ctx):
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            raise mercurial.util.Abort(_('%s: access denied for changeset %s') %
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                (__name__, mercurial.node.short(ctx.node())))
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def hook(ui, repo, hooktype, node=None, source=None, **kwargs):
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    if hooktype != 'pretxnchangegroup':
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        raise mercurial.util.Abort(_('config error - hook type "%s" cannot stop '
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                           'incoming changesets') % hooktype)
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    c = Checker(ui, repo)
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    for ctx in changes.changes(repo, node):
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        c.check(ctx)