// SERVER-6591: Localhost authentication exception doesn't work right on sharded cluster
//
// This test is to ensure that localhost authentication works correctly against a sharded
// cluster whether they are hosted with "localhost" or a hostname.

// Checking UUID consistency, which occurs on ShardingTest.stop, involves using a mongos to read
// data on the config server, but this test uses a special shutdown function which stops the
// mongoses before calling ShardingTest.stop.
TestData.skipCheckingUUIDsConsistentAcrossCluster = true;

(function() {
'use strict';

var replSetName = "replsets_server-6591";
var keyfile = "jstests/libs/key1";
var numShards = 2;
var username = "foo";
var password = "bar";

var createUser = function(mongo) {
    print("============ adding a user.");
    mongo.getDB("admin").createUser({user: username, pwd: password, roles: jsTest.adminUserRoles});
};

var addUsersToEachShard = function(st) {
    for (var i = 0; i < numShards; i++) {
        print("============ adding a user to shard " + i);
        var d = st["shard" + i];
        d.getDB("admin").createUser({user: username, pwd: password, roles: jsTest.adminUserRoles});
    }
};

var addShard = function(st, shouldPass) {
    var m = MongoRunner.runMongod({auth: "", keyFile: keyfile, useHostname: false, 'shardsvr': ''});
    var res = st.getDB("admin").runCommand({addShard: m.host});
    if (shouldPass) {
        assert.commandWorked(res, "Add shard");
    } else {
        assert.commandFailed(res, "Add shard");
    }
    return m;
};

var findEmptyShard = function(st, ns) {
    var counts = st.chunkCounts("foo");

    for (var shard in counts) {
        if (counts[shard] == 0) {
            return shard;
        }
    }

    return null;
};

var assertCannotRunCommands = function(mongo, st) {
    print("============ ensuring that commands cannot be run.");

    // CRUD
    var test = mongo.getDB("test");
    assert.throws(function() {
        test.system.users.findOne();
    });
    assert.writeError(test.foo.save({_id: 0}));
    assert.throws(function() {
        test.foo.findOne({_id: 0});
    });
    assert.writeError(test.foo.update({_id: 0}, {$set: {x: 20}}));
    assert.writeError(test.foo.remove({_id: 0}));

    // Multi-shard
    assert.throws(function() {
        test.foo.mapReduce(
            function() {
                emit(1, 1);
            },
            function(id, count) {
                return Array.sum(count);
            },
            {out: "other"});
    });

    // Config
    assert.throws(function() {
        mongo.getDB("config").shards.findOne();
    });

    var authorizeErrorCode = 13;
    var res = mongo.getDB("admin").runCommand({
        moveChunk: "test.foo",
        find: {_id: 1},
        to: st.shard0.shardName  // Arbitrary shard.
    });
    assert.commandFailedWithCode(res, authorizeErrorCode, "moveChunk");
    // Create collection
    assert.commandFailedWithCode(
        mongo.getDB("test").createCollection("log", {capped: true, size: 5242880, max: 5000}),
        authorizeErrorCode,
        "createCollection");
    // Set/Get system parameters
    var params = [
        {param: "journalCommitInterval", val: 200},
        {param: "logLevel", val: 2},
        {param: "logUserIds", val: 1},
        {param: "notablescan", val: 1},
        {param: "quiet", val: 1},
        {param: "replApplyBatchSize", val: 10},
        {param: "replIndexPrefetch", val: "none"},
        {param: "syncdelay", val: 30},
        {param: "traceExceptions", val: true},
        {param: "sslMode", val: "preferSSL"},
        {param: "clusterAuthMode", val: "sendX509"},
        {param: "userCacheInvalidationIntervalSecs", val: 300}
    ];
    params.forEach(function(p) {
        var cmd = {setParameter: 1};
        cmd[p.param] = p.val;
        assert.commandFailedWithCode(
            mongo.getDB("admin").runCommand(cmd), authorizeErrorCode, "setParameter: " + p.param);
    });
    params.forEach(function(p) {
        var cmd = {getParameter: 1};
        cmd[p.param] = 1;
        assert.commandFailedWithCode(
            mongo.getDB("admin").runCommand(cmd), authorizeErrorCode, "getParameter: " + p.param);
    });
};

var assertCanRunCommands = function(mongo, st) {
    print("============ ensuring that commands can be run.");

    // CRUD
    var test = mongo.getDB("test");

    // this will throw if it fails
    test.system.users.findOne();

    assert.commandWorked(test.foo.save({_id: 0}));
    assert.commandWorked(test.foo.update({_id: 0}, {$set: {x: 20}}));
    assert.commandWorked(test.foo.remove({_id: 0}));

    // Multi-shard
    test.foo.mapReduce(
        function() {
            emit(1, 1);
        },
        function(id, count) {
            return Array.sum(count);
        },
        {out: "other"});

    // Config
    // this will throw if it fails
    mongo.getDB("config").shards.findOne();

    var to = findEmptyShard(st, "test.foo");
    var res = mongo.getDB("admin").runCommand({moveChunk: "test.foo", find: {_id: 1}, to: to});
    assert.commandWorked(res);
};

var authenticate = function(mongo) {
    print("============ authenticating user.");
    mongo.getDB("admin").auth(username, password);
};

var setupSharding = function(shardingTest) {
    var mongo = shardingTest.s;

    print("============ enabling sharding on test.foo.");
    mongo.getDB("admin").runCommand({enableSharding: "test"});
    shardingTest.ensurePrimaryShard('test', st.shard1.shardName);
    mongo.getDB("admin").runCommand({shardCollection: "test.foo", key: {_id: 1}});

    var test = mongo.getDB("test");
    for (var i = 1; i < 20; i++) {
        test.foo.insert({_id: i});
    }
};

var start = function() {
    return new ShardingTest({
        auth: "",
        shards: numShards,
        other: {
            keyFile: keyfile,
            chunkSize: 1,
            useHostname:
                false,  // Must use localhost to take advantage of the localhost auth bypass
        }
    });
};

var shutdown = function(st) {
    print("============ shutting down.");

    // SERVER-8445
    // Unlike MongoRunner.stopMongod and ReplSetTest.stopSet,
    // ShardingTest.stop does not have a way to provide auth
    // information.  Therefore, we'll do this manually for now.

    for (var i = 0; i < st._mongos.length; i++) {
        var conn = st["s" + i];
        MongoRunner.stopMongos(conn,
                               /*signal*/ false,
                               {auth: {user: username, pwd: password}});
    }

    for (var i = 0; i < st._connections.length; i++) {
        st["rs" + i].stopSet(/*signal*/ false, {auth: {user: username, pwd: password}});
    }

    for (var i = 0; i < st._configServers.length; i++) {
        var conn = st["config" + i];
        MongoRunner.stopMongod(conn,
                               /*signal*/ false,
                               {auth: {user: username, pwd: password}});
    }

    st.stop();
};

print("=====================");
print("starting shards");
print("=====================");
var st = start();
var host = st.s.host;
var extraShards = [];

var mongo = new Mongo(host);

assertCannotRunCommands(mongo, st);

extraShards.push(addShard(st, 1));
createUser(mongo);

authenticate(mongo);
authenticate(st.s);
setupSharding(st);

addUsersToEachShard(st);
st.printShardingStatus();

assertCanRunCommands(mongo, st);

print("===============================");
print("reconnecting with a new client.");
print("===============================");

mongo = new Mongo(host);

assertCannotRunCommands(mongo, st);
extraShards.push(addShard(mongo, 0));

authenticate(mongo);

assertCanRunCommands(mongo, st);
extraShards.push(addShard(mongo, 1));
st.printShardingStatus();

shutdown(st);
extraShards.forEach(function(sh) {
    MongoRunner.stopMongod(sh);
});
})();