665 lines
30 KiB
JavaScript
665 lines
30 KiB
JavaScript
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"use strict";
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var __assign = (this && this.__assign) || function () {
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__assign = Object.assign || function(t) {
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for (var s, i = 1, n = arguments.length; i < n; i++) {
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s = arguments[i];
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for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p))
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t[p] = s[p];
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}
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return t;
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};
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return __assign.apply(this, arguments);
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};
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Object.defineProperty(exports, "__esModule", { value: true });
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exports.deserialize = void 0;
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var buffer_1 = require("buffer");
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var binary_1 = require("../binary");
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var code_1 = require("../code");
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var constants = require("../constants");
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var db_ref_1 = require("../db_ref");
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var decimal128_1 = require("../decimal128");
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var double_1 = require("../double");
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var error_1 = require("../error");
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var int_32_1 = require("../int_32");
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var long_1 = require("../long");
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var max_key_1 = require("../max_key");
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var min_key_1 = require("../min_key");
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var objectid_1 = require("../objectid");
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var regexp_1 = require("../regexp");
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var symbol_1 = require("../symbol");
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var timestamp_1 = require("../timestamp");
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var validate_utf8_1 = require("../validate_utf8");
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// Internal long versions
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var JS_INT_MAX_LONG = long_1.Long.fromNumber(constants.JS_INT_MAX);
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var JS_INT_MIN_LONG = long_1.Long.fromNumber(constants.JS_INT_MIN);
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var functionCache = {};
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function deserialize(buffer, options, isArray) {
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options = options == null ? {} : options;
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var index = options && options.index ? options.index : 0;
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// Read the document size
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var size = buffer[index] |
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(buffer[index + 1] << 8) |
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(buffer[index + 2] << 16) |
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(buffer[index + 3] << 24);
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if (size < 5) {
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throw new error_1.BSONError("bson size must be >= 5, is ".concat(size));
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}
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if (options.allowObjectSmallerThanBufferSize && buffer.length < size) {
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throw new error_1.BSONError("buffer length ".concat(buffer.length, " must be >= bson size ").concat(size));
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}
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if (!options.allowObjectSmallerThanBufferSize && buffer.length !== size) {
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throw new error_1.BSONError("buffer length ".concat(buffer.length, " must === bson size ").concat(size));
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}
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if (size + index > buffer.byteLength) {
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throw new error_1.BSONError("(bson size ".concat(size, " + options.index ").concat(index, " must be <= buffer length ").concat(buffer.byteLength, ")"));
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}
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// Illegal end value
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if (buffer[index + size - 1] !== 0) {
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throw new error_1.BSONError("One object, sized correctly, with a spot for an EOO, but the EOO isn't 0x00");
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}
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// Start deserializtion
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return deserializeObject(buffer, index, options, isArray);
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}
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exports.deserialize = deserialize;
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var allowedDBRefKeys = /^\$ref$|^\$id$|^\$db$/;
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function deserializeObject(buffer, index, options, isArray) {
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if (isArray === void 0) { isArray = false; }
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var evalFunctions = options['evalFunctions'] == null ? false : options['evalFunctions'];
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var cacheFunctions = options['cacheFunctions'] == null ? false : options['cacheFunctions'];
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var fieldsAsRaw = options['fieldsAsRaw'] == null ? null : options['fieldsAsRaw'];
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// Return raw bson buffer instead of parsing it
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var raw = options['raw'] == null ? false : options['raw'];
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// Return BSONRegExp objects instead of native regular expressions
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var bsonRegExp = typeof options['bsonRegExp'] === 'boolean' ? options['bsonRegExp'] : false;
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// Controls the promotion of values vs wrapper classes
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var promoteBuffers = options['promoteBuffers'] == null ? false : options['promoteBuffers'];
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var promoteLongs = options['promoteLongs'] == null ? true : options['promoteLongs'];
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var promoteValues = options['promoteValues'] == null ? true : options['promoteValues'];
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// Ensures default validation option if none given
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var validation = options.validation == null ? { utf8: true } : options.validation;
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// Shows if global utf-8 validation is enabled or disabled
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var globalUTFValidation = true;
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// Reflects utf-8 validation setting regardless of global or specific key validation
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var validationSetting;
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// Set of keys either to enable or disable validation on
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var utf8KeysSet = new Set();
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// Check for boolean uniformity and empty validation option
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var utf8ValidatedKeys = validation.utf8;
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if (typeof utf8ValidatedKeys === 'boolean') {
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validationSetting = utf8ValidatedKeys;
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}
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else {
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globalUTFValidation = false;
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var utf8ValidationValues = Object.keys(utf8ValidatedKeys).map(function (key) {
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return utf8ValidatedKeys[key];
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});
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if (utf8ValidationValues.length === 0) {
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throw new error_1.BSONError('UTF-8 validation setting cannot be empty');
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}
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if (typeof utf8ValidationValues[0] !== 'boolean') {
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throw new error_1.BSONError('Invalid UTF-8 validation option, must specify boolean values');
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}
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validationSetting = utf8ValidationValues[0];
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// Ensures boolean uniformity in utf-8 validation (all true or all false)
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if (!utf8ValidationValues.every(function (item) { return item === validationSetting; })) {
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throw new error_1.BSONError('Invalid UTF-8 validation option - keys must be all true or all false');
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}
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}
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// Add keys to set that will either be validated or not based on validationSetting
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if (!globalUTFValidation) {
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for (var _i = 0, _a = Object.keys(utf8ValidatedKeys); _i < _a.length; _i++) {
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var key = _a[_i];
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utf8KeysSet.add(key);
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}
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}
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// Set the start index
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var startIndex = index;
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// Validate that we have at least 4 bytes of buffer
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if (buffer.length < 5)
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throw new error_1.BSONError('corrupt bson message < 5 bytes long');
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// Read the document size
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var size = buffer[index++] | (buffer[index++] << 8) | (buffer[index++] << 16) | (buffer[index++] << 24);
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// Ensure buffer is valid size
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if (size < 5 || size > buffer.length)
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throw new error_1.BSONError('corrupt bson message');
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// Create holding object
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var object = isArray ? [] : {};
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// Used for arrays to skip having to perform utf8 decoding
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var arrayIndex = 0;
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var done = false;
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var isPossibleDBRef = isArray ? false : null;
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// While we have more left data left keep parsing
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var dataview = new DataView(buffer.buffer, buffer.byteOffset, buffer.byteLength);
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while (!done) {
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// Read the type
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var elementType = buffer[index++];
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// If we get a zero it's the last byte, exit
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if (elementType === 0)
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break;
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// Get the start search index
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var i = index;
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// Locate the end of the c string
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while (buffer[i] !== 0x00 && i < buffer.length) {
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i++;
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}
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// If are at the end of the buffer there is a problem with the document
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if (i >= buffer.byteLength)
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throw new error_1.BSONError('Bad BSON Document: illegal CString');
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// Represents the key
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var name = isArray ? arrayIndex++ : buffer.toString('utf8', index, i);
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// shouldValidateKey is true if the key should be validated, false otherwise
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var shouldValidateKey = true;
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if (globalUTFValidation || utf8KeysSet.has(name)) {
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shouldValidateKey = validationSetting;
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}
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else {
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shouldValidateKey = !validationSetting;
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}
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if (isPossibleDBRef !== false && name[0] === '$') {
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isPossibleDBRef = allowedDBRefKeys.test(name);
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}
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var value = void 0;
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index = i + 1;
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if (elementType === constants.BSON_DATA_STRING) {
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var stringSize = buffer[index++] |
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(buffer[index++] << 8) |
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(buffer[index++] << 16) |
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(buffer[index++] << 24);
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if (stringSize <= 0 ||
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stringSize > buffer.length - index ||
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buffer[index + stringSize - 1] !== 0) {
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throw new error_1.BSONError('bad string length in bson');
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}
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value = getValidatedString(buffer, index, index + stringSize - 1, shouldValidateKey);
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index = index + stringSize;
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}
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else if (elementType === constants.BSON_DATA_OID) {
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var oid = buffer_1.Buffer.alloc(12);
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buffer.copy(oid, 0, index, index + 12);
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value = new objectid_1.ObjectId(oid);
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index = index + 12;
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}
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else if (elementType === constants.BSON_DATA_INT && promoteValues === false) {
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value = new int_32_1.Int32(buffer[index++] | (buffer[index++] << 8) | (buffer[index++] << 16) | (buffer[index++] << 24));
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}
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else if (elementType === constants.BSON_DATA_INT) {
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value =
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buffer[index++] |
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(buffer[index++] << 8) |
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(buffer[index++] << 16) |
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(buffer[index++] << 24);
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}
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else if (elementType === constants.BSON_DATA_NUMBER && promoteValues === false) {
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value = new double_1.Double(dataview.getFloat64(index, true));
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index = index + 8;
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}
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else if (elementType === constants.BSON_DATA_NUMBER) {
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value = dataview.getFloat64(index, true);
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index = index + 8;
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}
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else if (elementType === constants.BSON_DATA_DATE) {
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var lowBits = buffer[index++] |
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(buffer[index++] << 8) |
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(buffer[index++] << 16) |
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(buffer[index++] << 24);
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var highBits = buffer[index++] |
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(buffer[index++] << 8) |
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(buffer[index++] << 16) |
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(buffer[index++] << 24);
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value = new Date(new long_1.Long(lowBits, highBits).toNumber());
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}
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else if (elementType === constants.BSON_DATA_BOOLEAN) {
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if (buffer[index] !== 0 && buffer[index] !== 1)
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throw new error_1.BSONError('illegal boolean type value');
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value = buffer[index++] === 1;
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}
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else if (elementType === constants.BSON_DATA_OBJECT) {
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var _index = index;
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var objectSize = buffer[index] |
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(buffer[index + 1] << 8) |
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(buffer[index + 2] << 16) |
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(buffer[index + 3] << 24);
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if (objectSize <= 0 || objectSize > buffer.length - index)
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throw new error_1.BSONError('bad embedded document length in bson');
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// We have a raw value
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if (raw) {
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value = buffer.slice(index, index + objectSize);
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}
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else {
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var objectOptions = options;
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if (!globalUTFValidation) {
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objectOptions = __assign(__assign({}, options), { validation: { utf8: shouldValidateKey } });
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}
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value = deserializeObject(buffer, _index, objectOptions, false);
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}
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index = index + objectSize;
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}
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else if (elementType === constants.BSON_DATA_ARRAY) {
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var _index = index;
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var objectSize = buffer[index] |
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(buffer[index + 1] << 8) |
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(buffer[index + 2] << 16) |
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(buffer[index + 3] << 24);
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var arrayOptions = options;
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// Stop index
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var stopIndex = index + objectSize;
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// All elements of array to be returned as raw bson
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if (fieldsAsRaw && fieldsAsRaw[name]) {
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arrayOptions = {};
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for (var n in options) {
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arrayOptions[n] = options[n];
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}
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arrayOptions['raw'] = true;
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}
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if (!globalUTFValidation) {
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arrayOptions = __assign(__assign({}, arrayOptions), { validation: { utf8: shouldValidateKey } });
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}
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value = deserializeObject(buffer, _index, arrayOptions, true);
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index = index + objectSize;
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if (buffer[index - 1] !== 0)
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throw new error_1.BSONError('invalid array terminator byte');
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if (index !== stopIndex)
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throw new error_1.BSONError('corrupted array bson');
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}
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else if (elementType === constants.BSON_DATA_UNDEFINED) {
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value = undefined;
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}
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else if (elementType === constants.BSON_DATA_NULL) {
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value = null;
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}
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else if (elementType === constants.BSON_DATA_LONG) {
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// Unpack the low and high bits
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var lowBits = buffer[index++] |
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(buffer[index++] << 8) |
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(buffer[index++] << 16) |
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(buffer[index++] << 24);
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var highBits = buffer[index++] |
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(buffer[index++] << 8) |
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(buffer[index++] << 16) |
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(buffer[index++] << 24);
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var long = new long_1.Long(lowBits, highBits);
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// Promote the long if possible
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if (promoteLongs && promoteValues === true) {
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value =
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long.lessThanOrEqual(JS_INT_MAX_LONG) && long.greaterThanOrEqual(JS_INT_MIN_LONG)
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? long.toNumber()
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: long;
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}
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else {
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value = long;
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}
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}
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else if (elementType === constants.BSON_DATA_DECIMAL128) {
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// Buffer to contain the decimal bytes
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var bytes = buffer_1.Buffer.alloc(16);
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// Copy the next 16 bytes into the bytes buffer
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buffer.copy(bytes, 0, index, index + 16);
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// Update index
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index = index + 16;
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// Assign the new Decimal128 value
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var decimal128 = new decimal128_1.Decimal128(bytes);
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// If we have an alternative mapper use that
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if ('toObject' in decimal128 && typeof decimal128.toObject === 'function') {
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value = decimal128.toObject();
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}
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else {
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value = decimal128;
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}
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}
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else if (elementType === constants.BSON_DATA_BINARY) {
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var binarySize = buffer[index++] |
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(buffer[index++] << 8) |
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(buffer[index++] << 16) |
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(buffer[index++] << 24);
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var totalBinarySize = binarySize;
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var subType = buffer[index++];
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// Did we have a negative binary size, throw
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if (binarySize < 0)
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throw new error_1.BSONError('Negative binary type element size found');
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// Is the length longer than the document
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if (binarySize > buffer.byteLength)
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throw new error_1.BSONError('Binary type size larger than document size');
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// Decode as raw Buffer object if options specifies it
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if (buffer['slice'] != null) {
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// If we have subtype 2 skip the 4 bytes for the size
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if (subType === binary_1.Binary.SUBTYPE_BYTE_ARRAY) {
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binarySize =
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buffer[index++] |
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(buffer[index++] << 8) |
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(buffer[index++] << 16) |
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(buffer[index++] << 24);
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if (binarySize < 0)
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throw new error_1.BSONError('Negative binary type element size found for subtype 0x02');
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if (binarySize > totalBinarySize - 4)
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|
|
throw new error_1.BSONError('Binary type with subtype 0x02 contains too long binary size');
|
||
|
|
if (binarySize < totalBinarySize - 4)
|
||
|
|
throw new error_1.BSONError('Binary type with subtype 0x02 contains too short binary size');
|
||
|
|
}
|
||
|
|
if (promoteBuffers && promoteValues) {
|
||
|
|
value = buffer.slice(index, index + binarySize);
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
value = new binary_1.Binary(buffer.slice(index, index + binarySize), subType);
|
||
|
|
if (subType === constants.BSON_BINARY_SUBTYPE_UUID_NEW) {
|
||
|
|
value = value.toUUID();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
var _buffer = buffer_1.Buffer.alloc(binarySize);
|
||
|
|
// If we have subtype 2 skip the 4 bytes for the size
|
||
|
|
if (subType === binary_1.Binary.SUBTYPE_BYTE_ARRAY) {
|
||
|
|
binarySize =
|
||
|
|
buffer[index++] |
|
||
|
|
(buffer[index++] << 8) |
|
||
|
|
(buffer[index++] << 16) |
|
||
|
|
(buffer[index++] << 24);
|
||
|
|
if (binarySize < 0)
|
||
|
|
throw new error_1.BSONError('Negative binary type element size found for subtype 0x02');
|
||
|
|
if (binarySize > totalBinarySize - 4)
|
||
|
|
throw new error_1.BSONError('Binary type with subtype 0x02 contains too long binary size');
|
||
|
|
if (binarySize < totalBinarySize - 4)
|
||
|
|
throw new error_1.BSONError('Binary type with subtype 0x02 contains too short binary size');
|
||
|
|
}
|
||
|
|
// Copy the data
|
||
|
|
for (i = 0; i < binarySize; i++) {
|
||
|
|
_buffer[i] = buffer[index + i];
|
||
|
|
}
|
||
|
|
if (promoteBuffers && promoteValues) {
|
||
|
|
value = _buffer;
|
||
|
|
}
|
||
|
|
else if (subType === constants.BSON_BINARY_SUBTYPE_UUID_NEW) {
|
||
|
|
value = new binary_1.Binary(buffer.slice(index, index + binarySize), subType).toUUID();
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
value = new binary_1.Binary(buffer.slice(index, index + binarySize), subType);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
// Update the index
|
||
|
|
index = index + binarySize;
|
||
|
|
}
|
||
|
|
else if (elementType === constants.BSON_DATA_REGEXP && bsonRegExp === false) {
|
||
|
|
// Get the start search index
|
||
|
|
i = index;
|
||
|
|
// Locate the end of the c string
|
||
|
|
while (buffer[i] !== 0x00 && i < buffer.length) {
|
||
|
|
i++;
|
||
|
|
}
|
||
|
|
// If are at the end of the buffer there is a problem with the document
|
||
|
|
if (i >= buffer.length)
|
||
|
|
throw new error_1.BSONError('Bad BSON Document: illegal CString');
|
||
|
|
// Return the C string
|
||
|
|
var source = buffer.toString('utf8', index, i);
|
||
|
|
// Create the regexp
|
||
|
|
index = i + 1;
|
||
|
|
// Get the start search index
|
||
|
|
i = index;
|
||
|
|
// Locate the end of the c string
|
||
|
|
while (buffer[i] !== 0x00 && i < buffer.length) {
|
||
|
|
i++;
|
||
|
|
}
|
||
|
|
// If are at the end of the buffer there is a problem with the document
|
||
|
|
if (i >= buffer.length)
|
||
|
|
throw new error_1.BSONError('Bad BSON Document: illegal CString');
|
||
|
|
// Return the C string
|
||
|
|
var regExpOptions = buffer.toString('utf8', index, i);
|
||
|
|
index = i + 1;
|
||
|
|
// For each option add the corresponding one for javascript
|
||
|
|
var optionsArray = new Array(regExpOptions.length);
|
||
|
|
// Parse options
|
||
|
|
for (i = 0; i < regExpOptions.length; i++) {
|
||
|
|
switch (regExpOptions[i]) {
|
||
|
|
case 'm':
|
||
|
|
optionsArray[i] = 'm';
|
||
|
|
break;
|
||
|
|
case 's':
|
||
|
|
optionsArray[i] = 'g';
|
||
|
|
break;
|
||
|
|
case 'i':
|
||
|
|
optionsArray[i] = 'i';
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
value = new RegExp(source, optionsArray.join(''));
|
||
|
|
}
|
||
|
|
else if (elementType === constants.BSON_DATA_REGEXP && bsonRegExp === true) {
|
||
|
|
// Get the start search index
|
||
|
|
i = index;
|
||
|
|
// Locate the end of the c string
|
||
|
|
while (buffer[i] !== 0x00 && i < buffer.length) {
|
||
|
|
i++;
|
||
|
|
}
|
||
|
|
// If are at the end of the buffer there is a problem with the document
|
||
|
|
if (i >= buffer.length)
|
||
|
|
throw new error_1.BSONError('Bad BSON Document: illegal CString');
|
||
|
|
// Return the C string
|
||
|
|
var source = buffer.toString('utf8', index, i);
|
||
|
|
index = i + 1;
|
||
|
|
// Get the start search index
|
||
|
|
i = index;
|
||
|
|
// Locate the end of the c string
|
||
|
|
while (buffer[i] !== 0x00 && i < buffer.length) {
|
||
|
|
i++;
|
||
|
|
}
|
||
|
|
// If are at the end of the buffer there is a problem with the document
|
||
|
|
if (i >= buffer.length)
|
||
|
|
throw new error_1.BSONError('Bad BSON Document: illegal CString');
|
||
|
|
// Return the C string
|
||
|
|
var regExpOptions = buffer.toString('utf8', index, i);
|
||
|
|
index = i + 1;
|
||
|
|
// Set the object
|
||
|
|
value = new regexp_1.BSONRegExp(source, regExpOptions);
|
||
|
|
}
|
||
|
|
else if (elementType === constants.BSON_DATA_SYMBOL) {
|
||
|
|
var stringSize = buffer[index++] |
|
||
|
|
(buffer[index++] << 8) |
|
||
|
|
(buffer[index++] << 16) |
|
||
|
|
(buffer[index++] << 24);
|
||
|
|
if (stringSize <= 0 ||
|
||
|
|
stringSize > buffer.length - index ||
|
||
|
|
buffer[index + stringSize - 1] !== 0) {
|
||
|
|
throw new error_1.BSONError('bad string length in bson');
|
||
|
|
}
|
||
|
|
var symbol = getValidatedString(buffer, index, index + stringSize - 1, shouldValidateKey);
|
||
|
|
value = promoteValues ? symbol : new symbol_1.BSONSymbol(symbol);
|
||
|
|
index = index + stringSize;
|
||
|
|
}
|
||
|
|
else if (elementType === constants.BSON_DATA_TIMESTAMP) {
|
||
|
|
var lowBits = buffer[index++] |
|
||
|
|
(buffer[index++] << 8) |
|
||
|
|
(buffer[index++] << 16) |
|
||
|
|
(buffer[index++] << 24);
|
||
|
|
var highBits = buffer[index++] |
|
||
|
|
(buffer[index++] << 8) |
|
||
|
|
(buffer[index++] << 16) |
|
||
|
|
(buffer[index++] << 24);
|
||
|
|
value = new timestamp_1.Timestamp(lowBits, highBits);
|
||
|
|
}
|
||
|
|
else if (elementType === constants.BSON_DATA_MIN_KEY) {
|
||
|
|
value = new min_key_1.MinKey();
|
||
|
|
}
|
||
|
|
else if (elementType === constants.BSON_DATA_MAX_KEY) {
|
||
|
|
value = new max_key_1.MaxKey();
|
||
|
|
}
|
||
|
|
else if (elementType === constants.BSON_DATA_CODE) {
|
||
|
|
var stringSize = buffer[index++] |
|
||
|
|
(buffer[index++] << 8) |
|
||
|
|
(buffer[index++] << 16) |
|
||
|
|
(buffer[index++] << 24);
|
||
|
|
if (stringSize <= 0 ||
|
||
|
|
stringSize > buffer.length - index ||
|
||
|
|
buffer[index + stringSize - 1] !== 0) {
|
||
|
|
throw new error_1.BSONError('bad string length in bson');
|
||
|
|
}
|
||
|
|
var functionString = getValidatedString(buffer, index, index + stringSize - 1, shouldValidateKey);
|
||
|
|
// If we are evaluating the functions
|
||
|
|
if (evalFunctions) {
|
||
|
|
// If we have cache enabled let's look for the md5 of the function in the cache
|
||
|
|
if (cacheFunctions) {
|
||
|
|
// Got to do this to avoid V8 deoptimizing the call due to finding eval
|
||
|
|
value = isolateEval(functionString, functionCache, object);
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
value = isolateEval(functionString);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
value = new code_1.Code(functionString);
|
||
|
|
}
|
||
|
|
// Update parse index position
|
||
|
|
index = index + stringSize;
|
||
|
|
}
|
||
|
|
else if (elementType === constants.BSON_DATA_CODE_W_SCOPE) {
|
||
|
|
var totalSize = buffer[index++] |
|
||
|
|
(buffer[index++] << 8) |
|
||
|
|
(buffer[index++] << 16) |
|
||
|
|
(buffer[index++] << 24);
|
||
|
|
// Element cannot be shorter than totalSize + stringSize + documentSize + terminator
|
||
|
|
if (totalSize < 4 + 4 + 4 + 1) {
|
||
|
|
throw new error_1.BSONError('code_w_scope total size shorter minimum expected length');
|
||
|
|
}
|
||
|
|
// Get the code string size
|
||
|
|
var stringSize = buffer[index++] |
|
||
|
|
(buffer[index++] << 8) |
|
||
|
|
(buffer[index++] << 16) |
|
||
|
|
(buffer[index++] << 24);
|
||
|
|
// Check if we have a valid string
|
||
|
|
if (stringSize <= 0 ||
|
||
|
|
stringSize > buffer.length - index ||
|
||
|
|
buffer[index + stringSize - 1] !== 0) {
|
||
|
|
throw new error_1.BSONError('bad string length in bson');
|
||
|
|
}
|
||
|
|
// Javascript function
|
||
|
|
var functionString = getValidatedString(buffer, index, index + stringSize - 1, shouldValidateKey);
|
||
|
|
// Update parse index position
|
||
|
|
index = index + stringSize;
|
||
|
|
// Parse the element
|
||
|
|
var _index = index;
|
||
|
|
// Decode the size of the object document
|
||
|
|
var objectSize = buffer[index] |
|
||
|
|
(buffer[index + 1] << 8) |
|
||
|
|
(buffer[index + 2] << 16) |
|
||
|
|
(buffer[index + 3] << 24);
|
||
|
|
// Decode the scope object
|
||
|
|
var scopeObject = deserializeObject(buffer, _index, options, false);
|
||
|
|
// Adjust the index
|
||
|
|
index = index + objectSize;
|
||
|
|
// Check if field length is too short
|
||
|
|
if (totalSize < 4 + 4 + objectSize + stringSize) {
|
||
|
|
throw new error_1.BSONError('code_w_scope total size is too short, truncating scope');
|
||
|
|
}
|
||
|
|
// Check if totalSize field is too long
|
||
|
|
if (totalSize > 4 + 4 + objectSize + stringSize) {
|
||
|
|
throw new error_1.BSONError('code_w_scope total size is too long, clips outer document');
|
||
|
|
}
|
||
|
|
// If we are evaluating the functions
|
||
|
|
if (evalFunctions) {
|
||
|
|
// If we have cache enabled let's look for the md5 of the function in the cache
|
||
|
|
if (cacheFunctions) {
|
||
|
|
// Got to do this to avoid V8 deoptimizing the call due to finding eval
|
||
|
|
value = isolateEval(functionString, functionCache, object);
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
value = isolateEval(functionString);
|
||
|
|
}
|
||
|
|
value.scope = scopeObject;
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
value = new code_1.Code(functionString, scopeObject);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else if (elementType === constants.BSON_DATA_DBPOINTER) {
|
||
|
|
// Get the code string size
|
||
|
|
var stringSize = buffer[index++] |
|
||
|
|
(buffer[index++] << 8) |
|
||
|
|
(buffer[index++] << 16) |
|
||
|
|
(buffer[index++] << 24);
|
||
|
|
// Check if we have a valid string
|
||
|
|
if (stringSize <= 0 ||
|
||
|
|
stringSize > buffer.length - index ||
|
||
|
|
buffer[index + stringSize - 1] !== 0)
|
||
|
|
throw new error_1.BSONError('bad string length in bson');
|
||
|
|
// Namespace
|
||
|
|
if (validation != null && validation.utf8) {
|
||
|
|
if (!(0, validate_utf8_1.validateUtf8)(buffer, index, index + stringSize - 1)) {
|
||
|
|
throw new error_1.BSONError('Invalid UTF-8 string in BSON document');
|
||
|
|
}
|
||
|
|
}
|
||
|
|
var namespace = buffer.toString('utf8', index, index + stringSize - 1);
|
||
|
|
// Update parse index position
|
||
|
|
index = index + stringSize;
|
||
|
|
// Read the oid
|
||
|
|
var oidBuffer = buffer_1.Buffer.alloc(12);
|
||
|
|
buffer.copy(oidBuffer, 0, index, index + 12);
|
||
|
|
var oid = new objectid_1.ObjectId(oidBuffer);
|
||
|
|
// Update the index
|
||
|
|
index = index + 12;
|
||
|
|
// Upgrade to DBRef type
|
||
|
|
value = new db_ref_1.DBRef(namespace, oid);
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
throw new error_1.BSONError("Detected unknown BSON type ".concat(elementType.toString(16), " for fieldname \"").concat(name, "\""));
|
||
|
|
}
|
||
|
|
if (name === '__proto__') {
|
||
|
|
Object.defineProperty(object, name, {
|
||
|
|
value: value,
|
||
|
|
writable: true,
|
||
|
|
enumerable: true,
|
||
|
|
configurable: true
|
||
|
|
});
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
object[name] = value;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
// Check if the deserialization was against a valid array/object
|
||
|
|
if (size !== index - startIndex) {
|
||
|
|
if (isArray)
|
||
|
|
throw new error_1.BSONError('corrupt array bson');
|
||
|
|
throw new error_1.BSONError('corrupt object bson');
|
||
|
|
}
|
||
|
|
// if we did not find "$ref", "$id", "$db", or found an extraneous $key, don't make a DBRef
|
||
|
|
if (!isPossibleDBRef)
|
||
|
|
return object;
|
||
|
|
if ((0, db_ref_1.isDBRefLike)(object)) {
|
||
|
|
var copy = Object.assign({}, object);
|
||
|
|
delete copy.$ref;
|
||
|
|
delete copy.$id;
|
||
|
|
delete copy.$db;
|
||
|
|
return new db_ref_1.DBRef(object.$ref, object.$id, object.$db, copy);
|
||
|
|
}
|
||
|
|
return object;
|
||
|
|
}
|
||
|
|
/**
|
||
|
|
* Ensure eval is isolated, store the result in functionCache.
|
||
|
|
*
|
||
|
|
* @internal
|
||
|
|
*/
|
||
|
|
function isolateEval(functionString, functionCache, object) {
|
||
|
|
// eslint-disable-next-line @typescript-eslint/no-implied-eval
|
||
|
|
if (!functionCache)
|
||
|
|
return new Function(functionString);
|
||
|
|
// Check for cache hit, eval if missing and return cached function
|
||
|
|
if (functionCache[functionString] == null) {
|
||
|
|
// eslint-disable-next-line @typescript-eslint/no-implied-eval
|
||
|
|
functionCache[functionString] = new Function(functionString);
|
||
|
|
}
|
||
|
|
// Set the object
|
||
|
|
return functionCache[functionString].bind(object);
|
||
|
|
}
|
||
|
|
function getValidatedString(buffer, start, end, shouldValidateUtf8) {
|
||
|
|
var value = buffer.toString('utf8', start, end);
|
||
|
|
// if utf8 validation is on, do the check
|
||
|
|
if (shouldValidateUtf8) {
|
||
|
|
for (var i = 0; i < value.length; i++) {
|
||
|
|
if (value.charCodeAt(i) === 0xfffd) {
|
||
|
|
if (!(0, validate_utf8_1.validateUtf8)(buffer, start, end)) {
|
||
|
|
throw new error_1.BSONError('Invalid UTF-8 string in BSON document');
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return value;
|
||
|
|
}
|
||
|
|
//# sourceMappingURL=deserializer.js.map
|