2017-02-04 09:52:14 +01:00
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// Copyright 2015-2017 Parity Technologies (UK) Ltd.
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// This file is part of Parity.
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// Parity is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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// Parity is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License
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// along with Parity. If not, see <http://www.gnu.org/licenses/>.
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import base32 from 'base32.js';
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2017-05-09 12:01:44 +02:00
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import { DOMAIN } from '@parity/shared/util/constants';
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2017-02-06 09:26:11 +01:00
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const BASE_URL = `.web${DOMAIN}`;
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2017-02-04 09:52:14 +01:00
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const ENCODER_OPTS = { type: 'crockford' };
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export function encodePath (token, url) {
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const encoder = new base32.Encoder(ENCODER_OPTS);
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const chars = `${token}+${url}`
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.split('')
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.map((char) => char.charCodeAt(0));
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return encoder
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.write(chars) // add the characters to encode
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.finalize(); // create the encoded string
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}
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export function encodeUrl (token, url) {
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const encoded = encodePath(token, url)
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.match(/.{1,63}/g) // split into 63-character chunks, max length is 64 for URLs parts
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.join('.'); // add '.' between URL parts
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return `${encoded}${BASE_URL}`;
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}
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// TODO: This export is really more a helper along the way of verifying the actual
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// encoding (being able to decode test values from the node layer), than meant to
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// be used as-is. Should the need arrise to decode URLs as well (instead of just
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// producing), it would make sense to further split the output into the token/URL
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export function decode (encoded) {
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const decoder = new base32.Decoder(ENCODER_OPTS);
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const sanitized = encoded
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.replace(BASE_URL, '') // remove the BASE URL
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.split('.') // split the string on the '.' (63-char boundaries)
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.join(''); // combine without the '.'
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return decoder
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.write(sanitized) // add the string to decode
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.finalize() // create the decoded buffer
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.toString(); // create string from buffer
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}
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export {
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BASE_URL
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};
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