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Added tool to dump JSON contents of encoded crashdump data

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Dylan K. Taylor 2022-12-01 19:35:59 +00:00
parent eb62dc3294
commit 43bc3c7b25
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1 changed files with 87 additions and 0 deletions
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tools/decode-crashdump.php Normal file
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<?php
/*
*
* ____ _ _ __ __ _ __ __ ____
* | _ \ ___ ___| | _____| |_| \/ (_)_ __ ___ | \/ | _ \
* | |_) / _ \ / __| |/ / _ \ __| |\/| | | '_ \ / _ \_____| |\/| | |_) |
* | __/ (_) | (__| < __/ |_| | | | | | | | __/_____| | | | __/
* |_| \___/ \___|_|\_\___|\__|_| |_|_|_| |_|\___| |_| |_|_|
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* @author PocketMine Team
* @link http://www.pocketmine.net/
*
*
*/
declare(strict_types=1);
namespace pocketmine\tools\decode_crashdump;
use function array_pop;
use function array_slice;
use function base64_decode;
use function count;
use function file;
use function file_put_contents;
use function fwrite;
use function implode;
use function json_decode;
use function json_encode;
use function realpath;
use function trim;
use function zlib_decode;
use const FILE_IGNORE_NEW_LINES;
use const PHP_EOL;
use const STDERR;
if(count($argv) === 2){
$input = $argv[1];
$output = "decoded.json";
}elseif(count($argv) === 3){
[, $input, $output] = $argv;
}else{
fwrite(STDERR, "Required arguments: input file, output file" . PHP_EOL);
exit(1);
}
$lines = file($input, FILE_IGNORE_NEW_LINES);
if($lines === false){
fwrite(STDERR, "Unable to read file $input" . PHP_EOL);
exit(1);
}
$start = -1;
foreach($lines as $num => $line){
if(trim($line) === "===BEGIN CRASH DUMP==="){
$start = $num + 1;
break;
}
}
if($start === -1){
fwrite(STDERR, "Crashdump encoded data not found in target file" . PHP_EOL);
exit(1);
}
$data = array_slice($lines, $start);
array_pop($data);
$zlibData = base64_decode(implode("", $data), true);
if($zlibData === false){
fwrite(STDERR, "Invalid encoded data in crashdump" . PHP_EOL);
exit(1);
}
$decoded = zlib_decode($zlibData);
if($decoded === false){
fwrite(STDERR, "Invalid compressed data in crashdump" . PHP_EOL);
exit(1);
}
file_put_contents($output, json_encode(json_decode($decoded), JSON_PRETTY_PRINT | JSON_UNESCAPED_SLASHES));
echo "Wrote decoded crashdump to " . realpath($output) . PHP_EOL;