diff options
Diffstat (limited to 'src/mongo/scripting/mozjs/bindata.cpp')
-rw-r--r-- | src/mongo/scripting/mozjs/bindata.cpp | 216 |
1 files changed, 216 insertions, 0 deletions
diff --git a/src/mongo/scripting/mozjs/bindata.cpp b/src/mongo/scripting/mozjs/bindata.cpp new file mode 100644 index 00000000000..10a3045f103 --- /dev/null +++ b/src/mongo/scripting/mozjs/bindata.cpp @@ -0,0 +1,216 @@ +/** + * 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/bindata.h" + +#include <iomanip> + +#include "mongo/scripting/mozjs/implscope.h" +#include "mongo/scripting/mozjs/objectwrapper.h" +#include "mongo/scripting/mozjs/valuereader.h" +#include "mongo/scripting/mozjs/valuewriter.h" +#include "mongo/util/base64.h" +#include "mongo/util/hex.h" +#include "mongo/util/mongoutils/str.h" + +namespace mongo { +namespace mozjs { + +const JSFunctionSpec BinDataInfo::methods[4] = { + MONGO_ATTACH_JS_FUNCTION(base64), + MONGO_ATTACH_JS_FUNCTION(hex), + MONGO_ATTACH_JS_FUNCTION(toString), + JS_FS_END, +}; + +const JSFunctionSpec BinDataInfo::freeFunctions[4] = { + MONGO_ATTACH_JS_FUNCTION_WITH_FLAGS(HexData, JSFUN_CONSTRUCTOR), + MONGO_ATTACH_JS_FUNCTION_WITH_FLAGS(MD5, JSFUN_CONSTRUCTOR), + MONGO_ATTACH_JS_FUNCTION_WITH_FLAGS(UUID, JSFUN_CONSTRUCTOR), + JS_FS_END, +}; + +const char* const BinDataInfo::className = "BinData"; + +namespace { + +void hexToBinData(JSContext* cx, int type, StringData hexstr, JS::MutableHandleValue out) { + auto scope = getScope(cx); + + // SERVER-9686: This function does not correctly check to make sure hexstr is actually made + // up of valid hex digits, and fails in the hex utility functions + + int len = hexstr.size() / 2; + std::unique_ptr<char[]> data(new char[len]); + const char* src = hexstr.rawData(); + for (int i = 0; i < len; i++) { + data[i] = fromHex(src + i * 2); + } + + std::string encoded = base64::encode(data.get(), len); + JS::AutoValueArray<2> args(cx); + + args[0].setInt32(type); + ValueReader(cx, args[1]).fromStringData(encoded); + return scope->getBinDataProto().newInstance(args, out); +} + +std::string* getEncoded(JS::HandleValue thisv) { + return static_cast<std::string*>(JS_GetPrivate(thisv.toObjectOrNull())); +} + +std::string* getEncoded(JSObject* thisv) { + return static_cast<std::string*>(JS_GetPrivate(thisv)); +} + +} // namespace + +void BinDataInfo::finalize(JSFreeOp* fop, JSObject* obj) { + auto str = getEncoded(obj); + + if (str) { + delete str; + } +} + +void BinDataInfo::Functions::UUID(JSContext* cx, JS::CallArgs args) { + if (args.length() != 1) + uasserted(ErrorCodes::BadValue, "UUID needs 1 argument"); + + auto str = ValueWriter(cx, args.get(0)).toString(); + + if (str.length() != 32) + uasserted(ErrorCodes::BadValue, "UUID string must have 32 characters"); + + hexToBinData(cx, bdtUUID, str, args.rval()); +} + +void BinDataInfo::Functions::MD5(JSContext* cx, JS::CallArgs args) { + if (args.length() != 1) + uasserted(ErrorCodes::BadValue, "MD5 needs 1 argument"); + + auto str = ValueWriter(cx, args.get(0)).toString(); + + if (str.length() != 32) + uasserted(ErrorCodes::BadValue, "MD5 string must have 32 characters"); + + hexToBinData(cx, MD5Type, str, args.rval()); +} + +void BinDataInfo::Functions::HexData(JSContext* cx, JS::CallArgs args) { + if (args.length() != 2) + uasserted(ErrorCodes::BadValue, "HexData needs 2 arguments"); + + JS::RootedValue type(cx, args.get(0)); + + if (!type.isNumber() || type.toInt32() < 0 || type.toInt32() > 255) + uasserted(ErrorCodes::BadValue, + "HexData subtype must be a Number between 0 and 255 inclusive"); + + auto str = ValueWriter(cx, args.get(1)).toString(); + + hexToBinData(cx, type.toInt32(), str, args.rval()); +} + +void BinDataInfo::Functions::toString(JSContext* cx, JS::CallArgs args) { + ObjectWrapper o(cx, args.thisv()); + + auto str = getEncoded(args.thisv()); + + str::stream ss; + + ss << "BinData(" << o.getNumber("type") << ",\"" << *str << "\")"; + + ValueReader(cx, args.rval()).fromStringData(ss.operator std::string()); +} + +void BinDataInfo::Functions::base64(JSContext* cx, JS::CallArgs args) { + auto str = getEncoded(args.thisv()); + + ValueReader(cx, args.rval()).fromStringData(*str); +} + +void BinDataInfo::Functions::hex(JSContext* cx, JS::CallArgs args) { + auto str = getEncoded(args.thisv()); + + std::string data = base64::decode(*str); + std::stringstream ss; + ss.setf(std::ios_base::hex, std::ios_base::basefield); + ss.fill('0'); + ss.setf(std::ios_base::right, std::ios_base::adjustfield); + for (auto it = data.begin(); it != data.end(); ++it) { + unsigned v = (unsigned char)*it; + ss << std::setw(2) << v; + } + + ValueReader(cx, args.rval()).fromStringData(ss.str()); +} + +void BinDataInfo::construct(JSContext* cx, JS::CallArgs args) { + auto scope = getScope(cx); + + if (args.length() != 2) { + uasserted(ErrorCodes::BadValue, "BinData takes 2 arguments -- BinData(subtype,data)"); + } + + auto type = args.get(0); + + if (!type.isNumber() || type.toInt32() < 0 || type.toInt32() > 255) { + uasserted(ErrorCodes::BadValue, + "BinData subtype must be a Number between 0 and 255 inclusive"); + } + + auto utf = args.get(1); + + if (!utf.isString()) { + uasserted(ErrorCodes::BadValue, "BinData data must be a String"); + } + + auto str = ValueWriter(cx, utf).toString(); + + auto tmpBase64 = base64::decode(str); + + JS::RootedObject thisv(cx); + scope->getBinDataProto().newObject(&thisv); + ObjectWrapper o(cx, thisv); + + JS::RootedValue len(cx); + len.setInt32(tmpBase64.length()); + + o.defineProperty("len", len, JSPROP_READONLY); + o.defineProperty("type", type, JSPROP_READONLY); + + JS_SetPrivate(thisv, new std::string(std::move(str))); + + args.rval().setObjectOrNull(thisv); +} + +} // namespace mozjs +} // namespace mongo |