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/*
MIT License http://www.opensource.org/licenses/mit-license.php
Author Ivan Kopeykin @vankop
*/
"use strict";
/** @typedef {import("./Resolver")} Resolver */
/** @typedef {import("./Resolver").ResolveStepHook} ResolveStepHook */
const slashCode = "/".charCodeAt(0);
const backslashCode = "\\".charCodeAt(0);
/**
* @param {string} path path
* @param {string} parent parent path
* @returns {boolean} true, if path is inside of parent
*/
const isInside = (path, parent) => {
if (!path.startsWith(parent)) return false;
if (path.length === parent.length) return true;
const charCode = path.charCodeAt(parent.length);
return charCode === slashCode || charCode === backslashCode;
};
module.exports = class RestrictionsPlugin {
/**
* @param {string | ResolveStepHook} source source
* @param {Set<string | RegExp>} restrictions restrictions
*/
constructor(source, restrictions) {
this.source = source;
this.restrictions = restrictions;
}
/**
* @param {Resolver} resolver the resolver
* @returns {void}
*/
apply(resolver) {
resolver
.getHook(this.source)
.tapAsync("RestrictionsPlugin", (request, resolveContext, callback) => {
if (typeof request.path === "string") {
const { path } = request;
for (const rule of this.restrictions) {
if (typeof rule === "string") {
if (!isInside(path, rule)) {
if (resolveContext.log) {
resolveContext.log(
`${path} is not inside of the restriction ${rule}`,
);
}
return callback(null, null);
}
} else if (!rule.test(path)) {
if (resolveContext.log) {
resolveContext.log(
`${path} doesn't match the restriction ${rule}`,
);
}
return callback(null, null);
}
}
}
callback();
});
}
};
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