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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 "mongo/scripting/mozjs/db.h"
#include "mongo/db/namespace_string.h"
#include "mongo/db/operation_context.h"
#include "mongo/scripting/mozjs/idwrapper.h"
#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/s/d_state.h"
namespace mongo {
namespace mozjs {
const char* const DBInfo::className = "DB";
void DBInfo::getProperty(JSContext* cx,
JS::HandleObject obj,
JS::HandleId id,
JS::MutableHandleValue vp) {
// 2nd look into real values, may be cached collection object
if (!vp.isUndefined()) {
auto scope = getScope(cx);
auto opContext = scope->getOpContext();
if (opContext && vp.isObject()) {
ObjectWrapper o(cx, vp);
if (o.hasOwnField(InternedString::_fullName)) {
// need to check every time that the collection did not get sharded
if (haveLocalShardingInfo(opContext, o.getString(InternedString::_fullName)))
uasserted(ErrorCodes::BadValue, "can't use sharded collection from db.eval");
}
}
return;
}
JS::RootedObject parent(cx);
if (!JS_GetPrototype(cx, obj, &parent))
uasserted(ErrorCodes::JSInterpreterFailure, "Couldn't get prototype");
ObjectWrapper parentWrapper(cx, parent);
if (parentWrapper.hasOwnField(id)) {
parentWrapper.getValue(id, vp);
return;
}
IdWrapper idw(cx, id);
// if starts with '_' we dont return collection, one must use getCollection()
if (idw.isString()) {
JSStringWrapper jsstr;
auto sname = idw.toStringData(&jsstr);
if (sname.size() == 0 || sname[0] == '_') {
return;
}
}
// no hit, create new collection
JS::RootedValue getCollection(cx);
parentWrapper.getValue(InternedString::getCollection, &getCollection);
if (!(getCollection.isObject() && JS_ObjectIsFunction(cx, getCollection.toObjectOrNull()))) {
uasserted(ErrorCodes::BadValue, "getCollection is not a function");
}
JS::AutoValueArray<1> args(cx);
idw.toValue(args[0]);
JS::RootedValue coll(cx);
ObjectWrapper(cx, obj).callMethod(getCollection, args, &coll);
uassert(16861,
"getCollection returned something other than a collection",
getScope(cx)->getProto<DBCollectionInfo>().instanceOf(coll));
// cache collection for reuse, don't enumerate
ObjectWrapper(cx, obj).defineProperty(id, coll, 0);
vp.set(coll);
}
void DBInfo::construct(JSContext* cx, JS::CallArgs args) {
auto scope = getScope(cx);
if (args.length() != 2)
uasserted(ErrorCodes::BadValue, "db constructor requires 2 arguments");
for (unsigned i = 0; i < args.length(); ++i) {
uassert(ErrorCodes::BadValue,
"db initializer called with undefined argument",
!args.get(i).isUndefined());
}
JS::RootedObject thisv(cx);
scope->getProto<DBInfo>().newObject(&thisv);
ObjectWrapper o(cx, thisv);
o.setValue(InternedString::_mongo, args.get(0));
o.setValue(InternedString::_name, args.get(1));
std::string dbName = ValueWriter(cx, args.get(1)).toString();
if (!NamespaceString::validDBName(dbName))
uasserted(ErrorCodes::BadValue,
str::stream() << "[" << dbName << "] is not a valid database name");
args.rval().setObjectOrNull(thisv);
}
} // namespace mozjs
} // namespace mongo
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