66 lines
1.8 KiB
JavaScript
66 lines
1.8 KiB
JavaScript
/**
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* Copyright (c) 2015-present, Facebook, Inc.
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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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* @format
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* @flow
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*/
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import escapeStringRegexp from 'escape-string-regexp';
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import { Linking } from 'react-native';
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import type {
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WebViewNavigationEvent,
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WebViewNavigation,
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OnShouldStartLoadWithRequest,
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} from './WebViewTypes';
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const defaultOriginWhitelist = ['http://*', 'https://*'];
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const extractOrigin = (url: string): string => {
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const result = /^[A-Za-z0-9]+:(\/\/)?[^/]*/.exec(url);
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return result === null ? '' : result[0];
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};
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const originWhitelistToRegex = (originWhitelist: string): string =>
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escapeStringRegexp(originWhitelist).replace(/\\\*/g, '.*');
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const passesWhitelist = (compiledWhitelist: Array<string>, url: string) => {
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const origin = extractOrigin(url);
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return compiledWhitelist.some(x => new RegExp(x).test(origin));
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};
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const compileWhitelist = (
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originWhitelist: ?$ReadOnlyArray<string>,
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): Array<string> =>
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['about:blank', ...(originWhitelist || [])].map(originWhitelistToRegex);
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const createOnShouldStartLoadWithRequest = (
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loadRequest: (
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shouldStart: boolean,
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url: string,
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lockIdentifier: number,
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) => void,
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originWhitelist: ?$ReadOnlyArray<string>,
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onShouldStartLoadWithRequest: ?OnShouldStartLoadWithRequest,
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) => {
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return ({ nativeEvent }: WebViewNavigationEvent) => {
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let shouldStart = true;
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const { url, lockIdentifier } = nativeEvent;
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if (!passesWhitelist(compileWhitelist(originWhitelist), url)) {
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Linking.openURL(url);
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shouldStart = false
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}
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if (onShouldStartLoadWithRequest) {
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shouldStart = onShouldStartLoadWithRequest(nativeEvent);
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}
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loadRequest(shouldStart, url, lockIdentifier);
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};
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};
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export { defaultOriginWhitelist, createOnShouldStartLoadWithRequest };
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