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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.
*/
#include "mongo/platform/basic.h"
#include <cstdint>
#include <iterator>
#include <string>
#include <vector>
#include "mongo/base/data_type_endian.h"
#include "mongo/base/data_view.h"
#include "mongo/db/jsobj.h"
#include "mongo/rpc/command_reply.h"
#include "mongo/stdx/memory.h"
#include "mongo/unittest/unittest.h"
#include "mongo/util/net/message.h"
namespace {
using namespace mongo;
using std::begin;
using std::end;
class ReplyTest : public mongo::unittest::Test {
protected:
std::vector<char> _cmdData{};
Message _message{};
virtual void setUp() override {
_message.reset();
}
virtual void tearDown() override {
_cmdData.clear();
}
void writeObj(const BSONObj& obj) {
_cmdData.insert(end(_cmdData), obj.objdata(), obj.objdata() + obj.objsize());
}
void writeObj(const BSONObj& obj, std::size_t length) {
_cmdData.insert(end(_cmdData), obj.objdata(), obj.objdata() + length);
}
const Message* buildMessage() {
_cmdData.shrink_to_fit();
_message.setData(dbCommandReply, _cmdData.data(), _cmdData.size());
return &_message;
}
};
TEST_F(ReplyTest, ParseAllFields) {
BSONObjBuilder commandReplyBob{};
commandReplyBob.append("baz", "garply");
auto commandReply = commandReplyBob.done();
writeObj(commandReply);
BSONObjBuilder metadataBob{};
metadataBob.append("foo", "bar");
auto metadata = metadataBob.done();
writeObj(metadata);
rpc::CommandReply opCmdReply{buildMessage()};
ASSERT_BSONOBJ_EQ(opCmdReply.getMetadata(), metadata);
ASSERT_BSONOBJ_EQ(opCmdReply.getCommandReply(), commandReply);
}
TEST_F(ReplyTest, EmptyMessageThrows) {
ASSERT_THROWS(rpc::CommandReply{buildMessage()}, AssertionException);
}
TEST_F(ReplyTest, MetadataOnlyThrows) {
BSONObjBuilder metadataBob{};
metadataBob.append("foo", "bar");
auto metadata = metadataBob.done();
writeObj(metadata);
ASSERT_THROWS(rpc::CommandReply{buildMessage()}, AssertionException);
}
TEST_F(ReplyTest, MetadataInvalidLengthThrows) {
BSONObjBuilder metadataBob{};
metadataBob.append("foo", "bar");
auto metadata = metadataBob.done();
auto trueSize = metadata.objsize();
// write a super long length field
DataView(const_cast<char*>(metadata.objdata())).write<LittleEndian<int32_t>>(100000);
writeObj(metadata, trueSize);
// write a valid commandReply
BSONObjBuilder commandReplyBob{};
commandReplyBob.append("baz", "garply");
auto commandReply = commandReplyBob.done();
writeObj(commandReply);
ASSERT_THROWS(rpc::CommandReply{buildMessage()}, AssertionException);
}
TEST_F(ReplyTest, InvalidLengthThrows) {
BSONObjBuilder metadataBob{};
metadataBob.append("foo", "bar");
auto metadata = metadataBob.done();
// write a valid metadata object
writeObj(metadata);
BSONObjBuilder commandReplyBob{};
commandReplyBob.append("baz", "garply");
auto commandReply = commandReplyBob.done();
auto trueSize = commandReply.objsize();
// write a super long length field
DataView(const_cast<char*>(commandReply.objdata())).write<LittleEndian<int32_t>>(100000);
writeObj(commandReply, trueSize);
ASSERT_THROWS(rpc::CommandReply{buildMessage()}, AssertionException);
}
}
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