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85 lines
2.3 KiB
JavaScript
85 lines
2.3 KiB
JavaScript
/**
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* Copyright (c) 2015-present, Waysact Pty Ltd
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*/
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var Template = require('webpack/lib/Template');
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var util = require('./util');
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function WebIntegrityJsonpMainTemplatePlugin(sriPlugin, compilation) {
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this.sriPlugin = sriPlugin;
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this.compilation = compilation;
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}
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function addSriHashes(plugin, chunk, source) {
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var allChunks = util.findChunks(chunk);
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if (allChunks.size > 0) {
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return (Template.asString || plugin.asString)([
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source,
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'var sriHashes = ' +
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JSON.stringify(
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Array.from(allChunks).reduce(function chunkIdReducer(
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sriHashes,
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depChunk
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) {
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if (chunk !== depChunk) {
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// eslint-disable-next-line no-param-reassign
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sriHashes[depChunk.id] = util.makePlaceholder(depChunk.id);
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}
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return sriHashes;
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},
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{})
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) +
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';'
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]);
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}
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return source;
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}
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WebIntegrityJsonpMainTemplatePlugin.prototype.apply = function apply(
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mainTemplate
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) {
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var self = this;
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/*
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* Patch jsonp-script code to add the integrity attribute.
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*/
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function jsonpScriptPlugin(source) {
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if (!mainTemplate.outputOptions.crossOriginLoading) {
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self.sriPlugin.error(
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self.compilation,
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'webpack option output.crossOriginLoading not set, code splitting will not work!'
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);
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}
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return (Template.asString || this.asString)([
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source,
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'script.integrity = sriHashes[chunkId];',
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'script.crossOrigin = ' + JSON.stringify(mainTemplate.outputOptions.crossOriginLoading) + ';',
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]);
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}
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/*
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* Patch local-vars code to add a mapping from chunk ID to SRIs.
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* Since SRIs haven't been computed at this point, we're using
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* magic placeholders for SRI values and going to replace them
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* later.
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*/
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function localVarsPlugin(source, chunk) {
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return addSriHashes(this, chunk, source);
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}
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if (mainTemplate.hooks) {
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mainTemplate.hooks.jsonpScript.tap('SriPlugin', jsonpScriptPlugin);
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mainTemplate.hooks.localVars.tap('SriPlugin', localVarsPlugin);
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} else {
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mainTemplate.plugin('jsonp-script', jsonpScriptPlugin);
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mainTemplate.plugin('local-vars', localVarsPlugin);
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}
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};
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module.exports = WebIntegrityJsonpMainTemplatePlugin;
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