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/**
* Copyright (C) 2015 MongoDB 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.
*/
#define MONGO_LOG_DEFAULT_COMPONENT ::mongo::logger::LogComponent::kASIO
#include "mongo/platform/basic.h"
#include "mongo/executor/network_interface_asio.h"
#include "mongo/bson/util/builder.h"
#include "mongo/client/authenticate.h"
#include "mongo/config.h"
#include "mongo/db/auth/authorization_manager_global.h"
#include "mongo/db/auth/internal_user_auth.h"
#include "mongo/db/commands.h"
#include "mongo/db/server_options.h"
#include "mongo/rpc/factory.h"
#include "mongo/rpc/legacy_request_builder.h"
#include "mongo/rpc/reply_interface.h"
#include "mongo/stdx/memory.h"
#include "mongo/util/net/sock.h"
#include "mongo/util/net/ssl_manager.h"
namespace mongo {
namespace executor {
using ResponseStatus = TaskExecutor::ResponseStatus;
void NetworkInterfaceASIO::_runIsMaster(AsyncOp* op) {
// We use a legacy builder to create our ismaster request because we may
// have to communicate with servers that do not support OP_COMMAND
rpc::LegacyRequestBuilder requestBuilder{};
requestBuilder.setDatabase("admin");
requestBuilder.setCommandName("isMaster");
BSONObjBuilder bob;
bob.append("isMaster", 1);
if (Command::testCommandsEnabled) {
// Only include the host:port of this process in the isMaster command request if test
// commands are enabled. mongobridge uses this field to identify the process opening a
// connection to it.
StringBuilder sb;
sb << getHostName() << ':' << serverGlobalParams.port;
bob.append("hostInfo", sb.str());
}
requestBuilder.setCommandArgs(bob.done());
requestBuilder.setMetadata(rpc::makeEmptyMetadata());
// Set current command to ismaster request and run
auto beginStatus = op->beginCommand(
requestBuilder.done(), AsyncCommand::CommandType::kRPC, op->request().target);
if (!beginStatus.isOK()) {
return _completeOperation(op, beginStatus);
}
// Callback to parse protocol information out of received ismaster response
auto parseIsMaster = [this, op]() {
auto swCommandReply = op->command()->response(rpc::Protocol::kOpQuery, now());
if (!swCommandReply.isOK()) {
return _completeOperation(op, swCommandReply.getStatus());
}
auto commandReply = std::move(swCommandReply.getValue());
auto protocolSet = rpc::parseProtocolSetFromIsMasterReply(commandReply.data);
if (!protocolSet.isOK())
return _completeOperation(op, protocolSet.getStatus());
op->connection().setServerProtocols(protocolSet.getValue());
invariant(op->connection().clientProtocols() != rpc::supports::kNone);
// Set the operation protocol
auto negotiatedProtocol =
rpc::negotiate(op->connection().serverProtocols(), op->connection().clientProtocols());
if (!negotiatedProtocol.isOK()) {
return _completeOperation(op, negotiatedProtocol.getStatus());
}
op->setOperationProtocol(negotiatedProtocol.getValue());
if (_hook) {
// Run the validation hook.
auto validHost = callNoexcept(
*_hook, &NetworkConnectionHook::validateHost, op->request().target, commandReply);
if (!validHost.isOK()) {
return _completeOperation(op, validHost);
}
}
return _authenticate(op);
};
_asyncRunCommand(op,
[this, op, parseIsMaster](std::error_code ec, size_t bytes) {
_validateAndRun(op, ec, std::move(parseIsMaster));
});
}
void NetworkInterfaceASIO::_authenticate(AsyncOp* op) {
// There is currently no way for NetworkInterfaceASIO's users to run a command
// without going through _authenticate(). Callers may want to run certain commands,
// such as ismasters, pre-auth. We may want to offer this choice in the future.
// This check is sufficient to see if auth is enabled on the system,
// and avoids creating dependencies on deeper, less accessible auth code.
if (!isInternalAuthSet()) {
return _runConnectionHook(op);
}
// We will only have a valid clientName if SSL is enabled.
std::string clientName;
#ifdef MONGO_CONFIG_SSL
if (getSSLManager()) {
clientName = getSSLManager()->getSSLConfiguration().clientSubjectName;
}
#endif
// authenticateClient will use this to run auth-related commands over our connection.
auto runCommandHook = [this, op](executor::RemoteCommandRequest request,
auth::AuthCompletionHandler handler) {
// SERVER-14170: Set the metadataHook to nullptr explicitly as we cannot write metadata
// here.
auto beginStatus = op->beginCommand(request, nullptr);
if (!beginStatus.isOK()) {
return handler(beginStatus);
}
auto callAuthCompletionHandler = [this, op, handler]() {
auto authResponse = op->command()->response(op->operationProtocol(), now(), nullptr);
handler(authResponse);
};
_asyncRunCommand(op,
[this, op, callAuthCompletionHandler](std::error_code ec, size_t bytes) {
_validateAndRun(op, ec, callAuthCompletionHandler);
});
};
// This will be called when authentication has completed.
auto authHook = [this, op](auth::AuthResponse response) {
if (!response.isOK())
return _completeOperation(op, response);
return _runConnectionHook(op);
};
auto params = getInternalUserAuthParamsWithFallback();
auth::authenticateClient(
params, op->request().target.host(), clientName, runCommandHook, authHook);
}
} // namespace executor
} // namespace mongo
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