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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/bindata.h"
#include <iomanip>
#include <cctype>
#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/scripting/mozjs/wrapconstrainedmethod.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_CONSTRAINED_METHOD_NO_PROTO(base64, BinDataInfo),
MONGO_ATTACH_JS_CONSTRAINED_METHOD_NO_PROTO(hex, BinDataInfo),
MONGO_ATTACH_JS_CONSTRAINED_METHOD_NO_PROTO(toString, BinDataInfo),
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,
const JS::Handle<JS::Value> hexdata,
JS::MutableHandleValue out) {
auto scope = getScope(cx);
uassert(ErrorCodes::BadValue, "BinData data must be a String", hexdata.isString());
auto hexstr = ValueWriter(cx, hexdata).toString();
uassert(
ErrorCodes::BadValue, "BinData hex string must be an even length", hexstr.size() % 2 == 0);
auto len = hexstr.size() / 2;
std::unique_ptr<char[]> data(new char[len]);
const char* src = hexstr.c_str();
for (size_t i = 0; i < len; i++) {
int src_index = i * 2;
if (!std::isxdigit(src[src_index]) || !std::isxdigit(src[src_index + 1]))
uasserted(ErrorCodes::BadValue, "Invalid hex character in string");
data[i] = fromHex(src + src_index);
}
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->getProto<BinDataInfo>().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::call(JSContext* cx, JS::CallArgs args) {
if (args.length() != 1)
uasserted(ErrorCodes::BadValue, "UUID needs 1 argument");
auto arg = args.get(0);
auto str = ValueWriter(cx, arg).toString();
if (str.length() != 32)
uasserted(ErrorCodes::BadValue, "UUID string must have 32 characters");
hexToBinData(cx, bdtUUID, arg, args.rval());
}
void BinDataInfo::Functions::MD5::call(JSContext* cx, JS::CallArgs args) {
if (args.length() != 1)
uasserted(ErrorCodes::BadValue, "MD5 needs 1 argument");
auto arg = args.get(0);
auto str = ValueWriter(cx, arg).toString();
if (str.length() != 32)
uasserted(ErrorCodes::BadValue, "MD5 string must have 32 characters");
hexToBinData(cx, MD5Type, arg, args.rval());
}
void BinDataInfo::Functions::HexData::call(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");
hexToBinData(cx, type.toInt32(), args.get(1), args.rval());
}
void BinDataInfo::Functions::toString::call(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::call(JSContext* cx, JS::CallArgs args) {
auto str = getEncoded(args.thisv());
ValueReader(cx, args.rval()).fromStringData(*str);
}
void BinDataInfo::Functions::hex::call(JSContext* cx, JS::CallArgs args) {
auto str = getEncoded(args.thisv());
std::string data = mongo::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);
auto typeNumber = ValueWriter(cx, type).toInt32();
if (!type.isNumber() || typeNumber < 0 || typeNumber > 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->getProto<BinDataInfo>().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
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