mirror of
https://github.com/QuiteAFancyEmerald/Holy-Unblocker.git
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38 lines
1.7 KiB
JavaScript
38 lines
1.7 KiB
JavaScript
// -------------------------------------------------------------
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// WARNING: this file is used by both the client and the server.
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// Do not use any browser or node-specific API!
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// -------------------------------------------------------------
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const codec = require('./codec');
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const defaultConfig = {
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prefix: '/service/',
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codec: 'plain'
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};
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class URLWrapper {
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constructor(config = defaultConfig) {
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this.prefix = config.prefix || defaultConfig.prefix;
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this.codec = codec[config.codec || 'plain'] || codec['plain'];
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this.regex = /^(#|about:|data:|blob:|mailto:|javascript:)/;
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};
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wrap(val, config = {}) {
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if (!val || this.regex.test(val)) return val;
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let flags = '';
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(config.flags || []).forEach(flag => flags += `${flag}_/`);
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if (config.base) try {
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if (!['http:', 'https:', 'ws:', 'wss:'].includes(new URL(val, config.base).protocol)) return val;
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} catch(e) {
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return val;
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};
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return (config.origin || '') + this.prefix + flags + this.codec.encode(config.base ? new URL(val, config.base) : val) + '/';
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};
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unwrap(val, config = {}) {
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if (!val || this.regex.test(val)) return val;
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let processed = val.slice((config.origin || '').length + this.prefix.length);
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const flags = ('/' + processed).match(/(?<=\/)(.*?)(?=_\/)/g) || [];
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flags.forEach(flag => processed = processed.slice(`${flag}_/`.length));
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let [ url, leftovers ] = processed.split(/\/(.+)?/);
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return config.flags ? { value: this.codec.decode((url || '')) + (config.leftovers && leftovers ? leftovers : ''), flags } : this.codec.decode((url || '')) + (config.leftovers && leftovers ? leftovers : '');
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};
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};
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module.exports = URLWrapper;
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