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61 lines
1.9 KiB
TypeScript
61 lines
1.9 KiB
TypeScript
/**
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* Licensed to the Apache Software Foundation (ASF) under one
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* or more contributor license agreements. See the NOTICE file
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* distributed with this work for additional information
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* regarding copyright ownership. The ASF licenses this file
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* to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing,
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* software distributed under the License is distributed on an
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* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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* KIND, either express or implied. See the License for the
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* specific language governing permissions and limitations
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* under the License.
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*/
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/**
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* Parse multipart form data sent via POST requests.
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*/
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export default function parsePostForm(requestBody: ArrayBuffer) {
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type ParsedFields = Record<string, string[] | string>;
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if (requestBody.constructor.name !== 'ArrayBuffer') {
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return requestBody;
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}
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const lines = new TextDecoder('utf-8').decode(requestBody).split('\n');
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const fields: ParsedFields = {};
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let key = '';
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let value: string[] = [];
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function addField(key: string, value: string) {
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if (key in fields) {
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if (Array.isArray(fields[key])) {
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(fields[key] as string[]).push(value);
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} else {
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fields[key] = [fields[key] as string, value];
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}
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} else {
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fields[key] = value;
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}
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}
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lines.forEach(line => {
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const nameMatch = line.match(/Content-Disposition: form-data; name="(.*)"/);
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if (nameMatch) {
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if (key) {
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addField(key, value.join('\n'));
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}
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key = nameMatch[1];
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value = [];
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} else if (!/----.*FormBoundary/.test(line)) {
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value.push(line);
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}
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});
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if (key && value) {
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addField(key, value.join('\n'));
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}
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return fields;
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}
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