| 1 | #!/usr/bin/env python |
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| 2 | |
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| 3 | """ |
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| 4 | See README in this directory for the semantics of the example. This file |
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| 5 | constructs the credentials described and puts copies into this directory |
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| 6 | |
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| 7 | cmd: ./attr.py |
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| 8 | """ |
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| 9 | import os |
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| 10 | import ABAC |
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| 11 | |
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| 12 | ctxt = ABAC.Context() |
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| 13 | |
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| 14 | # retrieve principals' keyid value from local credential files |
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| 15 | acmeID=ABAC.ID("Acme_ID.pem"); |
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| 16 | acmeID.load_privkey("Acme_private.pem"); |
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| 17 | ctxt.load_id_chunk(acmeID.cert_chunk()) |
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| 18 | acme=acmeID.keyid() |
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| 19 | |
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| 20 | coyoteID=ABAC.ID("Coyote_ID.pem"); |
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| 21 | coyoteID.load_privkey("Coyote_private.pem"); |
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| 22 | ctxt.load_id_chunk(coyoteID.cert_chunk()) |
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| 23 | coyote=coyoteID.keyid() |
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| 24 | |
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| 25 | bigbirdID=ABAC.ID("Bigbird_ID.pem"); |
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| 26 | bigbirdID.load_privkey("Bigbird_private.pem"); |
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| 27 | ctxt.load_id_chunk(bigbirdID.cert_chunk()) |
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| 28 | bigbird=bigbirdID.keyid() |
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| 29 | |
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| 30 | ################################################ |
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| 31 | # Credential 1, only preferred_customer of Acme can buy_rockets |
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| 32 | #[keyid:Acme].role:buy_rockets <- [keyid:Acme].role:preferred_customer |
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| 33 | |
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| 34 | # compose the attribute of a basic rt0 role rule |
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| 35 | attr = ABAC.Attribute(acmeID, "buy_rockets", 0) |
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| 36 | attr.role(acme,"preferred_customer") |
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| 37 | |
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| 38 | # finalize the policy |
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| 39 | attr.bake() |
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| 40 | |
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| 41 | # create a policy file at the file system |
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| 42 | attr.write_file("Acme_buy_rockets__Acme_preferred_customer_attr.xml") |
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| 43 | |
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| 44 | # load the policy into current context by with the newly created policy file |
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| 45 | ctxt.load_attribute_file("Acme_buy_rockets__Acme_preferred_customer_attr.xml") |
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| 46 | |
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| 47 | ################################################# |
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| 48 | # Credential 2 |
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| 49 | #[keyid:Acme].role:preferred_customer <- [keyid:Coyote] |
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| 50 | attr = ABAC.Attribute(acmeID, "preferred_customer", 0) |
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| 51 | attr.principal(coyote) |
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| 52 | attr.bake() |
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| 53 | |
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| 54 | attr.write_file("Acme_preferred_customer__Coyote_attr.xml") |
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| 55 | ctxt.load_attribute_file("Acme_preferred_customer__Coyote_attr.xml") |
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| 56 | |
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| 57 | ################################################# |
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| 58 | # Credential 3 |
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| 59 | #[keyid:Coyote].role:friend <- [keyid:Bigbird] |
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| 60 | attr = ABAC.Attribute(coyoteID, "friend", 0) |
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| 61 | attr.principal(bigbird) |
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| 62 | attr.bake() |
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| 63 | |
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| 64 | attr.write_file("Coyote_friend__Bigbird_attr.xml") |
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| 65 | ctxt.load_attribute_chunk(attr.cert_chunk()) |
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| 66 | |
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| 67 | ################################################# |
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| 68 | credentials = ctxt.credentials() |
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| 69 | for credential in credentials: |
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| 70 | print "context: %s <- %s" % (credential.head().string(), credential.tail().string()) |
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