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rule.ts
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rule.ts
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/*
* SonarQube JavaScript Plugin
* Copyright (C) 2011-2024 SonarSource SA
* mailto:info AT sonarsource DOT com
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 3 of the License, or (at your option) any later version.
*
* 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
// https://sonarsource.github.io/rspec/#/rspec/S5691/javascript
import { Rule } from 'eslint';
import * as estree from 'estree';
import { getUniqueWriteUsage, getFullyQualifiedName, getProperty } from '../helpers';
const SERVE_STATIC = 'serve-static';
export const rule: Rule.RuleModule = {
meta: {
messages: {
safeHiddenFile: 'Make sure serving hidden files is safe here.',
},
},
create(context: Rule.RuleContext) {
return {
CallExpression(node: estree.Node) {
// serveStatic(...)
const { callee, arguments: args } = node as estree.CallExpression;
if (getFullyQualifiedName(context, callee) === SERVE_STATIC && args.length > 1) {
let options: estree.Node | undefined = args[1];
if (options.type === 'Identifier') {
options = getUniqueWriteUsage(context, options.name);
}
const dotfilesProperty = getProperty(options, 'dotfiles', context);
if (
dotfilesProperty?.value.type === 'Literal' &&
dotfilesProperty.value.value === 'allow'
) {
context.report({ node: dotfilesProperty, messageId: 'safeHiddenFile' });
}
}
},
};
},
};