[abf8d5d] | 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 | cmd1:env keystore=`pwd` ./attr.py |
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| 8 | """ |
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| 9 | |
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| 10 | import os |
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| 11 | import ABAC |
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| 12 | |
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| 13 | ctxt = ABAC.Context() |
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| 14 | print "ABAC version %s" % ctxt.version() |
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| 15 | |
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| 16 | # Keystore is the directory containing the principal credentials. |
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| 17 | # Load existing principals and/or policy credentials |
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| 18 | if (os.environ.has_key("keystore")) : |
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| 19 | keystore=os.environ["keystore"] |
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| 20 | ctxt.load_directory(keystore) |
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| 21 | |
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| 22 | out = ctxt.context_principals() |
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| 23 | print "...initial principal set..." |
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| 24 | for x in out[1]: |
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| 25 | print "%s " % x.string() |
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| 26 | print "\n" |
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| 27 | |
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| 28 | out = ctxt.context_credentials() |
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| 29 | print "...initial policy attribute set..." |
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| 30 | for c in out[1]: |
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| 31 | print "%s <- %s" % (c.head_string(), c.tail_string()) |
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| 32 | print "\n" |
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| 33 | |
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| 34 | # retrieve principals' keyid value from local credential files |
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| 35 | acmeID=ABAC.ID("Acme_ID.pem"); |
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| 36 | acmeID.id_load_privkey_file("Acme_private.pem"); |
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| 37 | acme=acmeID.id_keyid() |
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| 38 | |
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| 39 | bobID=ABAC.ID("Bob_ID.pem"); |
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| 40 | bobID.id_load_privkey_file("Bob_private.pem"); |
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| 41 | bob=bobID.id_keyid() |
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| 42 | |
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| 43 | aliceID=ABAC.ID("Alice_ID.pem"); |
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| 44 | aliceID.id_load_privkey_file("Alice_private.pem"); |
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| 45 | alice=aliceID.id_keyid() |
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| 46 | |
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| 47 | daveID=ABAC.ID("Dave_ID.pem"); |
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| 48 | daveID.id_load_privkey_file("Dave_private.pem"); |
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| 49 | dave=daveID.id_keyid() |
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| 50 | |
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| 51 | globotronID=ABAC.ID("Globotron_ID.pem"); |
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| 52 | globotronID.id_load_privkey_file("Globotron_private.pem"); |
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| 53 | globotron=globotronID.id_keyid() |
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| 54 | |
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| 55 | ################################################ |
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| 56 | # Credential 1, Anyone who is allowed to create experiment by Acme's |
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| 57 | # partners can create experiment at Acme |
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| 58 | # [keyid:Acme].role:experiment_create |
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| 59 | # <- [keyid:Acme].role:partner.role:experiment_create |
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| 60 | head=ABAC.Role(acme,"experiment_create") |
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| 61 | |
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| 62 | # creating a linking role |
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| 63 | tail = ABAC.Role(acme,"partner","experiment_create") |
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| 64 | |
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| 65 | # compose the policy attribute |
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| 66 | attr=ABAC.Attribute(head, 1800) |
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| 67 | attr.attribute_add_tail(tail) |
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| 68 | |
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| 69 | # finalize the policy |
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| 70 | attr.attribute_bake() |
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| 71 | |
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| 72 | # write out the policy to an external file |
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| 73 | attr.attribute_write_cert("Acme_experiment_create__Acme_partner_experiment_create_attr.der") |
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| 74 | |
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| 75 | # load the policy into the context by accessing that external file |
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| 76 | ctxt.load_attribute_file("Acme_experiment_create__Acme_partner_experiment_create_attr.der") |
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| 77 | print attr.string() |
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| 78 | print attr.typed_string() |
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| 79 | print "\n" |
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| 80 | |
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| 81 | ################################################# |
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| 82 | # Credential 2 |
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| 83 | # [keyid:Acme].role:partner <- [keyid:Globotron] |
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| 84 | # |
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| 85 | head=ABAC.Role(acme,"partner") |
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| 86 | tail = ABAC.Role(globotron) |
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| 87 | attr=ABAC.Attribute(head, 1800) |
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| 88 | attr.attribute_add_tail(tail) |
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| 89 | attr.attribute_bake() |
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| 90 | attr.attribute_write_cert("Acme_partner__Globotron_attr.der") |
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| 91 | ctxt.load_attribute_file("Acme_partner__Globotron_attr.der") |
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| 92 | print attr.string() |
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| 93 | print attr.typed_string() |
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| 94 | print "\n" |
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| 95 | |
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| 96 | ################################################# |
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| 97 | # Credential 3 |
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| 98 | # [keyid:Globotron].role:expriment_create |
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| 99 | # <- [keyid:Globotron].role:admin.role:power_user |
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| 100 | head = ABAC.Role(acme,"experiment_create") |
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| 101 | |
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| 102 | # a linking role |
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| 103 | tail = ABAC.Role(globotron,"admin","power_user") |
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| 104 | attr=ABAC.Attribute(head, 1800) |
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| 105 | attr.attribute_add_tail(tail) |
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| 106 | attr.attribute_bake() |
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| 107 | attr.attribute_write_cert("Globotron_experiment_create__Globotron_admin_power_user_attr.der") |
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| 108 | ctxt.load_attribute_file("Globotron_experiment_create__Globotron_admin_power_user_attr.der") |
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| 109 | print attr.string() |
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| 110 | print attr.typed_string() |
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| 111 | print "\n" |
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| 112 | |
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| 113 | ################################################# |
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| 114 | # Credential 4, named term at the right |
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| 115 | # [keyid:Globotron].role:admin <- [keyid:Alice] |
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| 116 | head = ABAC.Role(globotron,"admin") |
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| 117 | |
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| 118 | # the named role is using keyid of alice |
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| 119 | tail = ABAC.Role(alice) |
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| 120 | attr=ABAC.Attribute(head, 1800) |
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| 121 | attr.attribute_add_tail(tail) |
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| 122 | attr.attribute_bake() |
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| 123 | attr.attribute_write_cert("Globotron_admin__Alice_attr.der") |
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| 124 | ctxt.load_attribute_file("Globotron_admin__Alice_attr.der") |
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| 125 | print attr.string() |
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| 126 | print attr.typed_string() |
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| 127 | print "\n" |
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| 128 | |
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| 129 | ################################################# |
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| 130 | # Credential 5, |
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| 131 | # [keyid:Alice].role:power_user <- [keyid:Bob] |
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| 132 | head = ABAC.Role(alice,"power_user") |
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| 133 | tail = ABAC.Role(bob) |
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| 134 | attr=ABAC.Attribute(head, 1800) |
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| 135 | attr.attribute_add_tail(tail) |
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| 136 | attr.attribute_bake() |
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| 137 | attr.attribute_write_cert("Alice_power_user__Bob_attr.der") |
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| 138 | ctxt.load_attribute_file("Alice_power_user__Bob_attr.der") |
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| 139 | print attr.string() |
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| 140 | print attr.typed_string() |
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| 141 | print "\n" |
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| 142 | |
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| 143 | |
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| 144 | ################################################# |
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| 145 | # Credential 6, named term at the right |
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| 146 | # [keyid:Globotron].role:admin <- [keyid:Dave] |
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| 147 | head = ABAC.Role(globotron,"admin") |
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| 148 | |
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| 149 | # the named role is using keyid of alice |
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| 150 | tail = ABAC.Role(dave) |
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| 151 | attr=ABAC.Attribute(head, 1800) |
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| 152 | attr.attribute_add_tail(tail) |
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| 153 | attr.attribute_bake() |
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| 154 | attr.attribute_write_cert("Globotron_admin__Dave_attr.der") |
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| 155 | ctxt.load_attribute_file("Globotron_admin__Dave_attr.der") |
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| 156 | print attr.string() |
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| 157 | print attr.typed_string() |
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| 158 | print "\n" |
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| 159 | |
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| 160 | ################################################# |
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| 161 | # Credential 7, |
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| 162 | # [keyid:Dave].role:power_user <- [keyid:Bob] |
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| 163 | head = ABAC.Role(dave,"power_user") |
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| 164 | tail = ABAC.Role(bob) |
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| 165 | attr=ABAC.Attribute(head, 1800) |
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| 166 | attr.attribute_add_tail(tail) |
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| 167 | attr.attribute_bake() |
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| 168 | attr.attribute_write_cert("Dave_power_user__Bob_attr.der") |
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| 169 | ctxt.load_attribute_file("Dave_power_user__Bob_attr.der") |
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| 170 | print attr.string() |
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| 171 | print attr.typed_string() |
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| 172 | print "\n" |
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| 173 | |
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