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// Test the killCursors command.
// @tags: [requires_sharding]
(function() {
'use strict';
// TODO SERVER-35447: Multiple users cannot be authenticated on one connection within a session.
TestData.disableImplicitSessions = true;
function runTest(mongod) {
/**
* Open a cursor on `db` while authenticated as `authUsers`.
* Then logout, and log back in as `killUsers` and try to kill that cursor.
*
* @param db - The db to create a cursor on and ultimately kill agains.
* @param authUsers - Array of ['username', db] pairs to create the cursor under.
* @param killUsers - Array of ['username', dn] pairs to use when killing.
* @param shouldWork - Whether we expect success
*/
function tryKill(db, authUsers, killUsers, shouldWork) {
function loginAll(users) {
users.forEach(function(u) {
assert(u[1].auth(u[0], 'pass'));
});
}
function logoutAll() {
[testA, testB].forEach(function(d) {
const users = assert.commandWorked(d.runCommand({connectionStatus: 1}))
.authInfo.authenticatedUsers;
users.forEach(function(u) {
mongod.getDB(u.db).logout();
});
});
}
function doKill(extra) {
// Create a cursor to be killed later.
loginAll(authUsers);
let cmd = {find: db.coll.getName(), batchSize: 2};
Object.assign(cmd, extra);
const id = assert.commandWorked(db.runCommand(cmd)).cursor.id;
assert.neq(id, 0, "Invalid cursor ID");
logoutAll();
loginAll(killUsers);
const killCmd = db.runCommand({killCursors: db.coll.getName(), cursors: [id]});
logoutAll();
if (shouldWork) {
assert.commandWorked(killCmd, "Unable to kill cursor");
} else {
assert.commandFailed(killCmd, "Should not have been able to kill cursor");
}
}
doKill({});
if ((authUsers.length === 1) && (killUsers.length === 1)) {
// Session variant only makes sense with single auth'd users.
doKill({lsid: {id: BinData(4, "QlLfPHTySm6tqfuV+EOsVA==")}});
}
}
function trySelfKill(user) {
const db = user[1];
assert(db.auth(user[0], 'pass'));
assert.commandWorked(db.runCommand({startSession: 1}));
const cmd = {
aggregate: 1,
pipeline: [{$listLocalSessions: {}}],
cursor: {batchSize: 0}
};
const res = assert.commandWorked(db.runCommand(cmd));
print(tojson(res));
const id = res.cursor.id;
assert.neq(id, 0, "Invalid cursor ID");
const killCmdRes = db.runCommand({killCursors: db.getName() + ".$cmd", cursors: [id]});
db.logout();
assert.commandWorked(killCmdRes, "Unable to kill cursor");
}
/**
* Create user1/user2 in testA, and user3/user4 in testB.
* Create two 101 element collections in testA and testB.
* Use various combinations of those users to open cursors,
* then (potentially) different combinations of users to kill them.
*
* A cursor should only be killable if at least one of the users
* who created it is trying to kill it.
*/
const testA = mongod.getDB('testA');
const testB = mongod.getDB('testB');
const admin = mongod.getDB('admin');
// Setup users
admin.createUser({user: 'admin', pwd: 'pass', roles: jsTest.adminUserRoles});
assert(admin.auth('admin', 'pass'));
testA.createUser({user: 'user1', pwd: 'pass', roles: jsTest.basicUserRoles});
testA.createUser({user: 'user2', pwd: 'pass', roles: jsTest.basicUserRoles});
testB.createUser({user: 'user3', pwd: 'pass', roles: jsTest.basicUserRoles});
testB.createUser({user: 'user4', pwd: 'pass', roles: jsTest.basicUserRoles});
testB.createUser({user: 'user5', pwd: 'pass', roles: []});
admin.logout();
// Create a collection with batchable data
assert(testA.auth('user1', 'pass'));
assert(testB.auth('user3', 'pass'));
for (var i = 0; i < 101; ++i) {
assert.writeOK(testA.coll.insert({_id: i}));
assert.writeOK(testB.coll.insert({_id: i}));
}
testA.logout();
testB.logout();
// A user can kill their own cursor.
tryKill(testA, [['user1', testA]], [['user1', testA]], true);
tryKill(testA, [['user2', testA]], [['user2', testA]], true);
tryKill(testB, [['user3', testB]], [['user3', testB]], true);
tryKill(testB, [['user4', testB]], [['user4', testB]], true);
trySelfKill(['user1', testA]);
trySelfKill(['user5', testB]);
trySelfKill(['admin', admin]);
// A user cannot kill someone else's cursor.
tryKill(testA, [['user1', testA]], [['user2', testA]], false);
tryKill(testA, [['user1', testA]], [['user2', testA], ['user3', testB]], false);
tryKill(testA, [['user2', testA]], [['user1', testA]], false);
tryKill(testA, [['user2', testA]], [['user1', testA], ['user3', testB]], false);
tryKill(testB, [['user3', testB]], [['user1', testA], ['user4', testB]], false);
tryKill(testB, [['user3', testB]], [['user2', testA], ['user4', testB]], false);
// A multi-owned cursor can be killed by any/all owner.
tryKill(testA, [['user1', testA], ['user3', testB]], [['user1', testA]], true);
tryKill(testB, [['user1', testA], ['user3', testB]], [['user3', testB]], true);
tryKill(testA,
[['user1', testA], ['user3', testB]],
[['user1', testA], ['user3', testB]],
true);
tryKill(testA,
[['user1', testA], ['user3', testB]],
[['user2', testA], ['user3', testB]],
true);
tryKill(testB,
[['user1', testA], ['user3', testB]],
[['user1', testA], ['user3', testB]],
true);
tryKill(testB,
[['user1', testA], ['user3', testB]],
[['user1', testA], ['user4', testB]],
true);
// An owned cursor can not be killed by other user(s).
tryKill(testA,
[['user1', testA], ['user3', testB]],
[['user2', testA], ['user4', testB]],
false);
tryKill(testA, [['user1', testA]], [['user2', testA], ['user3', testB]], false);
tryKill(testA,
[['user1', testA], ['user3', testB]],
[['user2', testA], ['user4', testB]],
false);
// Admin can kill anything.
tryKill(testA, [['user1', testA]], [['admin', admin]], true);
tryKill(testA, [['user2', testA]], [['admin', admin]], true);
tryKill(testB, [['user3', testB]], [['admin', admin]], true);
tryKill(testB, [['user4', testB]], [['admin', admin]], true);
tryKill(testA, [['user1', testA], ['user3', testB]], [['admin', admin]], true);
tryKill(testB, [['user2', testA], ['user4', testB]], [['admin', admin]], true);
}
const mongod = MongoRunner.runMongod({auth: ""});
runTest(mongod);
MongoRunner.stopMongod(mongod);
// TODO: Remove 'shardAsReplicaSet: false' when SERVER-32672 is fixed.
const st = new ShardingTest({
shards: 1,
mongos: 1,
config: 1,
other: {keyFile: 'jstests/libs/key1', shardAsReplicaSet: false}
});
runTest(st.s0);
st.stop();
})();
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