47 lines
1.5 KiB
PHP
47 lines
1.5 KiB
PHP
<?php
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function show($file)
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{
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if (file_exists($file))
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print file_get_contents($file);
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else
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header("HTTP/1.1 403 Forbidden");
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}
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$filename = intval($_GET["team"])."-".intval($_GET["theme"])."-".urlencode($_GET["exercice"]);
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$file = __DIR__."/submission/".$filename;
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if (file_exists($file))
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show(__DIR__."/teams/".intval($_GET["team"])."/".urlencode($_GET["theme"])."/".urlencode($_GET["exercice"])."/submission/serr/index.html");
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else if (!empty($_POST["solution"]) && !empty($_GET["team"]) && !empty($_GET["theme"]) && !empty($_GET["exercice"]))
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{
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$algos = array("md5", "sha1", "sha256", "sha384", "sha512", "whirlpool");
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$content = "";
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foreach($algos as $algo)
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{
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$cnt = hash($algo, $filename, true);
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// Encrypt twice on long key
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$key = hash($algo, $_POST["solution"]);
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$kfirst = pack('H*', substr($key, 0, 64));
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$cnt = mcrypt_encrypt(MCRYPT_SERPENT, $kfirst, $cnt, MCRYPT_MODE_ECB);
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if (strlen($key) > 64)
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{
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$ksec = pack('H*', substr($key, 64, 64));
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$cnt = mcrypt_encrypt(MCRYPT_SERPENT, $ksec, $cnt, MCRYPT_MODE_ECB);
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}
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$content .= bin2hex($cnt)."\n";
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}
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file_put_contents($file, $content, LOCK_EX);
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show(__DIR__."/teams/".intval($_GET["team"])."/".urlencode($_GET["theme"])."/".urlencode($_GET["exercice"])."/submission/index.html");
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}
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else
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show(__DIR__."/teams/".intval($_GET["team"])."/".urlencode($_GET["theme"])."/".urlencode($_GET["exercice"])."/submission/gerr/index.html");
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