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/*
 *    Copyright (C) 2013 10gen Inc.
 *
 *    This program is free software: you can redistribute it and/or  modify
 *    it under the terms of the GNU Affero General Public License, version 3,
 *    as published by the Free Software Foundation.
 *
 *    This program is distributed in the hope that it will be useful,
 *    but WITHOUT ANY WARRANTY; without even the implied warranty of
 *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *    GNU Affero General Public License for more details.
 *
 *    You should have received a copy of the GNU Affero General Public License
 *    along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 *    As a special exception, the copyright holders give permission to link the
 *    code of portions of this program with the OpenSSL library under certain
 *    conditions as described in each individual source file and distribute
 *    linked combinations including the program with the OpenSSL library. You
 *    must comply with the GNU Affero General Public License in all respects for
 *    all of the code used other than as permitted herein. If you modify file(s)
 *    with this exception, you may extend this exception to your version of the
 *    file(s), but you are not obligated to do so. If you do not wish to do so,
 *    delete this exception statement from your version. If you delete this
 *    exception statement from all source files in the program, then also delete
 *    it in the license file.
 */

/**
 * These tests verify that modifications to user-defined roles propagate to secondary nodes.
 *
 * First, it sets up a 1-node replicaset and adds some roles.
 * Then, it adds a second node to the replicaset, and verifies that the roles sync correctly.
 * Then, it runs a variety of operations on the primary, and ensures that they replicate correctly.
 */

(function() {

var name = 'user_defined_roles_on_secondaries';
var m0, m1;

function assertListContainsRole(list, role, msg) {
    var i;
    for (i = 0; i < list.length; ++i) {
        if (list[i].role == role.role && list[i].db == role.db)
            return;
    }
    doassert("Could not find value " + tojson(val) + " in " + tojson(list)
            (msg ? ": " + msg : ""));
}

//
// Create a 1-node replicaset and add two roles, inheriting the built-in read role on db1.
//
//     read
//    /    \
//  r1      r2
//
var rstest = new ReplSetTest({
    name: name,
    nodes: 1,
    nodeOptions: {}
});

rstest.startSet();
rstest.initiate();

m0 = rstest.nodes[0];

m0.getDB("db1").createRole({
    role: "r1",
    roles: [ "read" ],
    privileges: [
        { resource: { db: "db1", collection: "system.users" }, actions: [ "find" ] }
    ]
});

m0.getDB("db1").createRole({
    role: "r2",
    roles: [ "read" ],
    privileges: [
        { resource: { db: "db1", collection: "log" }, actions: [ "insert" ] }
    ]
});

//
// Add a second node to the set, and add a third role, dependent on the first two.
//
//     read
//    /    \
//  r1      r2
//    \    /
//      r3
//
rstest.add();
rstest.reInitiate();

rstest.getPrimary().getDB("db1").createRole({
    role: "r3",
    roles: [ "r1", "r2" ],
    privileges: [
        { resource: { db: "db1", collection: "log" }, actions: [ "update" ] }
    ]
}, { w: 2 });

// Verify that both members of the set see the same role graph.
rstest.nodes.forEach(function (node) {
    var role = node.getDB("db1").getRole("r3");
    assert.eq(2, role.roles.length, node);
    assertListContainsRole(role.roles, {role: "r1", db: "db1"}, node);
    assertListContainsRole(role.roles, {role: "r2", db: "db1"}, node);
    assert.eq(3, role.inheritedRoles.length, node);
    assertListContainsRole(role.inheritedRoles, {role: "r1", db: "db1"}, node);
    assertListContainsRole(role.inheritedRoles, {role: "r2", db: "db1"}, node);
    assertListContainsRole(role.inheritedRoles, {role: "read", db: "db1"}, node);
});

// Verify that updating roles propagates.
rstest.getPrimary().getDB("db1").revokeRolesFromRole("r1", [ "read" ], { w: 2 });
rstest.getPrimary().getDB("db1").grantRolesToRole("r1", [ "dbAdmin" ], { w: 2 });
rstest.nodes.forEach(function (node) {
    var role = node.getDB("db1").getRole("r1");
    assert.eq(1, role.roles.length, node);
    assertListContainsRole(role.roles, { role: "dbAdmin", db: "db1" });
});

// Verify that dropping roles propagates.
rstest.getPrimary().getDB("db1").dropRole("r2", { w: 2});
rstest.nodes.forEach(function (node) {
    assert.eq(null, node.getDB("db1").getRole("r2"));
    var role = node.getDB("db1").getRole("r3");
    assert.eq(1, role.roles.length, node);
    assertListContainsRole(role.roles, {role: "r1", db: "db1"}, node);
    assert.eq(2, role.inheritedRoles.length, node);
    assertListContainsRole(role.inheritedRoles, {role: "r1", db: "db1"}, node);
    assertListContainsRole(role.inheritedRoles, {role: "dbAdmin", db: "db1"}, node);
});

// Verify that dropping the admin database propagates.
assert.commandWorked(rstest.getPrimary().getDB("admin").dropDatabase());
assert.commandWorked(rstest.getPrimary().getDB("admin").getLastErrorObj(2));
rstest.nodes.forEach(function (node) {
    var roles = node.getDB("db1").getRoles();
    assert.eq(0, roles.length, node);
});

// Verify that applyOps commands propagate.
// NOTE: This section of the test depends on the oplog and roles schemas.
assert.commandWorked(rstest.getPrimary().getDB("admin").runCommand({ applyOps: [
    {
        op: "c",
        ns: "admin.$cmd",
        o: { create: "system.roles" }
    },
    {
        op: "i",
        ns: "admin.system.roles",
        o: {
            _id: "db1.s1",
            role: "s1",
            db: "db1",
            roles: [ { role: "read", db: "db1" } ],
            privileges: [ { resource: { db: "db1", collection: "system.users" },
                            actions: [ "find" ] } ] }
    },
    {
        op: "i",
        ns: "admin.system.roles",
        o: {
            _id: "db1.s2",
            role: "s2",
            db: "db1",
            roles: [ { role: "read", db: "db1" } ],
            privileges: [ { resource: { db: "db1", collection: "log" },
                            actions: [ "insert" ] } ] }
    },
    {
        op: "c",
        ns: "admin.$cmd",
        o: { dropDatabase: 1 }
    },
    {
        op: "c",
        ns: "admin.$cmd",
        o: { create: "system.roles" }
    },
    {
        op: "i",
        ns: "admin.system.roles",
        o: {
            _id: "db1.t1",
            role: "t1",
            db: "db1",
            roles: [ { role: "read", db: "db1" } ],
            privileges: [ { resource: { db: "db1", collection: "system.users" },
                            actions: [ "find" ] } ] }
    },
    {
        op: "i",
        ns: "admin.system.roles",
        o: {
            _id: "db1.t2",
            role: "t2",
            db: "db1",
            roles: [ ],
            privileges: [ { resource: { db: "db1", collection: "log" },
                            actions: [ "insert" ] } ] }
    },
    {
        op: "u",
        ns: "admin.system.roles",
        o: { $set: { roles: [ { role: "readWrite", db: "db1" } ] } },
        o2: { _id: "db1.t2" }
    }
] }));

assert.commandWorked(rstest.getPrimary().getDB("admin").getLastErrorObj(2));
rstest.nodes.forEach(function (node) {
    var role = node.getDB("db1").getRole("t1");
    assert.eq(1, role.roles.length, node);
    assertListContainsRole(role.roles, {role: "read", db: "db1"}, node);

    var role = node.getDB("db1").getRole("t2");
    assert.eq(1, role.roles.length, node);
    assertListContainsRole(role.roles, {role: "readWrite", db: "db1"}, node);
});

}());