87 lines
2.4 KiB
JavaScript
87 lines
2.4 KiB
JavaScript
/*
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MIT License http://www.opensource.org/licenses/mit-license.php
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Author Ivan Kopeykin @vankop
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*/
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"use strict";
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const { isInside, normalize } = require("./util/path");
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/** @typedef {import("./Resolver")} Resolver */
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/** @typedef {import("./Resolver").ResolveStepHook} ResolveStepHook */
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/**
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* @typedef {object} PathRestriction
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* @property {"path"} type type of the restriction
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* @property {string} rule normalized path the request has to be inside of
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*/
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/**
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* @typedef {object} RegExpRestriction
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* @property {"regexp"} type type of the restriction
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* @property {RegExp} rule pattern the request has to match
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*/
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/** @typedef {PathRestriction | RegExpRestriction} Restriction */
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module.exports = class RestrictionsPlugin {
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/**
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* @param {string | ResolveStepHook} source source
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* @param {Set<string | RegExp>} restrictions restrictions
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*/
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constructor(source, restrictions) {
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this.source = source;
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this.restrictions = restrictions;
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// Restrictions never change, so bringing them into the shape requests
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// arrive in is done once here instead of on every request.
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/** @type {Restriction[]} */
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this._restrictions = [];
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for (const rule of restrictions) {
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this._restrictions.push(
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typeof rule === "string"
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? { type: "path", rule: normalize(rule) }
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: { type: "regexp", rule },
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);
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}
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}
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/**
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* @param {Resolver} resolver the resolver
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* @returns {void}
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*/
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apply(resolver) {
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resolver
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.getHook(this.source)
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.tapAsync("RestrictionsPlugin", (request, resolveContext, callback) => {
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if (typeof request.path === "string") {
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const { path } = request;
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for (const restriction of this._restrictions) {
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if (restriction.type === "path") {
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if (isInside(restriction.rule, path)) continue;
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if (resolveContext.log) {
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resolveContext.log(
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`${path} is not inside of the restriction ${restriction.rule}`,
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);
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}
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} else {
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if (restriction.rule.test(path)) continue;
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if (resolveContext.log) {
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resolveContext.log(
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`${path} doesn't match the restriction ${restriction.rule}`,
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);
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}
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}
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// Target existed (FileExistsPlugin already passed) but is
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// outside the jail; signal ExportsFieldPlugin to fall back.
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if (request.__restrictionsMarker) {
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request.__restrictionsMarker.blocked = true;
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}
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return callback(null, null);
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}
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}
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callback();
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});
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}
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};
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