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/**
* Copyright (C) 2018-present MongoDB, Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the Server Side Public License, version 1,
* as published by MongoDB, Inc.
*
* 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
* Server Side Public License for more details.
*
* You should have received a copy of the Server Side Public License
* along with this program. If not, see
* <http://www.mongodb.com/licensing/server-side-public-license>.
*
* 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 Server Side 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 "mongo/scripting/mozjs/timestamp.h"
#include <limits>
#include <string>
#include "mongo/scripting/mozjs/implscope.h"
#include "mongo/scripting/mozjs/internedstring.h"
#include "mongo/scripting/mozjs/objectwrapper.h"
#include "mongo/scripting/mozjs/valuereader.h"
#include "mongo/scripting/mozjs/valuewriter.h"
#include "mongo/scripting/mozjs/wrapconstrainedmethod.h"
#include "mongo/util/str.h"
namespace mongo {
namespace mozjs {
const JSFunctionSpec TimestampInfo::methods[2] = {
MONGO_ATTACH_JS_CONSTRAINED_METHOD(toJSON, TimestampInfo),
JS_FS_END,
};
const char* const TimestampInfo::className = "Timestamp";
namespace {
// Checks that a JavaScript value is a number in the range of an unsigned 32-bit integer. The 'name'
// is used to describe the parameter that failed validation in the error message to the user.
double getTimestampComponent(JSContext* cx, JS::HandleValue component, std::string name) {
int64_t maxValue = std::numeric_limits<uint32_t>::max();
if (!component.isNumber())
uasserted(ErrorCodes::BadValue, str::stream() << name << " must be a number");
int64_t val = ValueWriter(cx, component).toInt64();
if (val < 0 || val > maxValue) {
uasserted(ErrorCodes::BadValue,
str::stream() << name << " must be non-negative and not greater than " << maxValue
<< ", got " << val);
}
return val;
}
} // namespace
void TimestampInfo::construct(JSContext* cx, JS::CallArgs args) {
auto scope = getScope(cx);
JS::RootedObject thisv(cx);
scope->getProto<TimestampInfo>().newObject(&thisv);
ObjectWrapper o(cx, thisv);
if (args.length() == 0) {
o.setNumber(InternedString::t, 0);
o.setNumber(InternedString::i, 0);
} else if (args.length() == 2) {
o.setNumber(InternedString::t,
getTimestampComponent(cx, args.get(0), "Timestamp time (seconds)"));
o.setNumber(InternedString::i,
getTimestampComponent(cx, args.get(1), "Timestamp increment"));
} else {
uasserted(ErrorCodes::BadValue, "Timestamp needs 0 or 2 arguments");
}
args.rval().setObjectOrNull(thisv);
}
Timestamp TimestampInfo::getValidatedValue(JSContext* cx, JS::HandleObject obj) {
ObjectWrapper wrapper(cx, obj);
uassert(6900900,
"Malformed timestamp in JavaScript: missing timestamp field, 't'",
wrapper.hasOwnField("t"));
uassert(6900901,
"Malformed timestamp in JavaScript: missing increment field, 'i'",
wrapper.hasOwnField("i"));
JS::RootedValue time(cx);
wrapper.getValue("t", &time);
JS::RootedValue increment(cx);
wrapper.getValue("i", &increment);
return {static_cast<uint32_t>(getTimestampComponent(cx, time, "Timestamp time (seconds)")),
static_cast<uint32_t>(getTimestampComponent(cx, increment, "Timestamp increment"))};
}
void TimestampInfo::Functions::toJSON::call(JSContext* cx, JS::CallArgs args) {
ObjectWrapper o(cx, args.thisv());
ValueReader(cx, args.rval())
.fromBSON(BSON("$timestamp" << BSON("t" << o.getNumber(InternedString::t) << "i"
<< o.getNumber(InternedString::i))),
nullptr,
false);
}
} // namespace mozjs
} // namespace mongo
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