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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 <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/platform/cstdint.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{};
// using unique ptr so we can destroy and replace easily
// since message does not have operator= or swap defined...
std::unique_ptr<Message> _message{};
virtual void setUp() override {
_message = stdx::make_unique<Message>();
}
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.get();
}
};
TEST_F(ReplyTest, ParseAllFields) {
BSONObjBuilder metadataBob{};
metadataBob.append("foo", "bar");
auto metadata = metadataBob.done();
writeObj(metadata);
BSONObjBuilder commandReplyBob{};
commandReplyBob.append("baz", "garply");
auto commandReply = commandReplyBob.done();
writeObj(commandReply);
BSONObjBuilder outputDoc1Bob{};
outputDoc1Bob.append("meep", "boop").append("meow", "chirp");
auto outputDoc1 = outputDoc1Bob.done();
writeObj(outputDoc1);
BSONObjBuilder outputDoc2Bob{};
outputDoc1Bob.append("bleep", "bop").append("woof", "squeak");
auto outputDoc2 = outputDoc2Bob.done();
writeObj(outputDoc2);
rpc::CommandReply opCmdReply{buildMessage()};
ASSERT_EQUALS(opCmdReply.getMetadata(), metadata);
ASSERT_EQUALS(opCmdReply.getCommandReply(), commandReply);
auto outputDocRange = opCmdReply.getOutputDocs();
auto outputDocRangeIter = outputDocRange.begin();
ASSERT_EQUALS(*outputDocRangeIter, outputDoc1);
// can't use assert equals since we don't have an op to print the iter.
ASSERT_FALSE(outputDocRangeIter == outputDocRange.end());
++outputDocRangeIter;
ASSERT_EQUALS(*outputDocRangeIter, outputDoc2);
ASSERT_FALSE(outputDocRangeIter == outputDocRange.end());
++outputDocRangeIter;
ASSERT_TRUE(outputDocRangeIter == outputDocRange.end());
}
TEST_F(ReplyTest, EmptyMessageThrows) {
ASSERT_THROWS(rpc::CommandReply{buildMessage()}, UserException);
}
TEST_F(ReplyTest, MetadataOnlyThrows) {
BSONObjBuilder metadataBob{};
metadataBob.append("foo", "bar");
auto metadata = metadataBob.done();
writeObj(metadata);
ASSERT_THROWS(rpc::CommandReply{buildMessage()}, UserException);
}
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()}, UserException);
}
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()}, UserException);
}
}
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