source: examples/python_tests/access_rt2/README @ a0c1772

mei_rt2mei_rt2_fix_1
Last change on this file since a0c1772 was bde4e91, checked in by Mei <mei@…>, 12 years ago

1) add creddy_internal.h

  • Property mode set to 100755
File size: 1.8 KB
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1#####################################################################
2# label: 00
3# This example demonstrates using an oset (object set) to control access
4# to files based on the attributes of the principals.  The script creates
5# three principals Alpha, Bob and Joe and sets out the access policy.
6#
7# files are named by URNs and are not principals.
8#
9# A principal's access rights are controlled by the Alpha principal.  If a
10# principal has the role role::acess(string:'Read', urn:filename) that
11# principal can Read filename. 
12# The policy names 2 teams, proj1 and proj1.  A principal is on proj1 if it
13# has the role team(string:'proj1') defined by Alpha (written
14# [keyid:Alpha].role:team(string:'proj1')).  Each project has an associated set
15# of files, defined by object sets.  A file is in proj1's documents if it is in
16# the oset of documents('proj1') defined by Alpha, written
17# [keyid:Alpha].oset:documents(string:'proj1'))
18#
19# The example below lays out the policy that members of a given project can
20# Read the documents of that project in Credential 1 and adds file://fileA to
21# the document set for proj1 in Credential 2 - note that no principal is
22# required for fileA.  Credentials 3 & 4 add Bob to proj1 and Joe to proj2.
23#
24# The attached query.py file runs 3 queries.  First it confirms that Bob can Read
25# fileA, then it confirms that Joe cannot.  Finally it confirms that Joe is in
26# proj2.
27
28# access_rt2
29
30# Credential 1
31#[keyid:alpha].role:access([string:'Read'],
32#                    [urn:?F[keyid:alpha].oset:documents([string:?P])])
33#                                     <- [keyid:alpha].role:team([string:?P])
34# Credential 2
35#[keyid:alpha].oset:documents([string:'proj1'])<-[urn:'file//fileA']
36# Credential 3
37# [keyid:alpha].role:team([string:'proj1'])<-[keyid:Bob]
38# Credential 4
39# [keyid:alpha].role:team([string:'proj2'])<-[keyid:Joe]
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