mirror of
https://github.com/danog/MadelineProto.git
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50 lines
1.8 KiB
PHP
50 lines
1.8 KiB
PHP
<?php
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/*
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Copyright 2016 Daniil Gentili
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(https://daniil.it)
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This file is part of MadelineProto.
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MadelineProto is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
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MadelineProto is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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See the GNU Affero General Public License for more details.
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You should have received a copy of the GNU General Public License along with MadelineProto.
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If not, see <http://www.gnu.org/licenses/>.
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*/
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require 'vendor/autoload.php';
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$id = ['AgADBAADcKoxG4_aCgYKET2oLMua7pxRaRkABKoeLWY9bpazGdcCAAEC', 'BQADBAADhQEAAo_aCgZOb3LWhOazMQI'];
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function foreach_offset_length($string)
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{
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$res = [];
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$strlen = strlen($string);
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for ($offset = 0; $offset < strlen($string); $offset++) {
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for ($length = $strlen - $offset; $length > 0; $length--) {
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$s = substr($string, $offset, $length);
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$number = (string) (new \phpseclib\Math\BigInteger(strrev($s), 256));
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$res[] = ['number' => $number, 'offset' => $offset, 'length' => $length];
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}
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}
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return $res;
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}
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$res = [];
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foreach ($id as $file_id) {
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$base256 = base64url_decode($file_id);
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$res = foreach_offset_length($base256);
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if (!isset($same)) {
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$same = $res;
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} else {
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foreach ($same as $key => $s) {
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if (!in_array($s, $res)) {
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unset($same[$key]);
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}
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}
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}
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}
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function base64url_decode($data)
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{
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return base64_decode(str_pad(strtr($data, '-_', '+/'), strlen($data) % 4, '=', STR_PAD_RIGHT));
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}
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