mirror of
https://github.com/pierre42100/comunic
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36 lines
1.0 KiB
PHP
36 lines
1.0 KiB
PHP
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<?php
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// Generate a large random hexadecimal salt.
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function generateRandomSalt()
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{
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$randomSalt='';
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if (function_exists("mcrypt_create_iv"))
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{
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$randomSalt = bin2hex(mcrypt_create_iv(256, MCRYPT_DEV_URANDOM));
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}
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else // fallback to mt_rand()
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{
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for($i=0;$i<16;$i++) { $randomSalt.=base_convert(mt_rand(),10,16); }
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}
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return $randomSalt;
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}
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/* Return this ZeroBin server salt.
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This is a random string which is unique to each ZeroBin installation.
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It is automatically created if not present.
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Salt is used:
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- to generate unique VizHash in discussions (which are not reproductible across ZeroBin servers)
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- to generate unique deletion token (which are not re-usable across ZeroBin servers)
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*/
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function getServerSalt()
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{
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$saltfile = 'data/salt.php';
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if (!is_file($saltfile))
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file_put_contents($saltfile,'<?php /* |'.generateRandomSalt().'| */ ?>',LOCK_EX);
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$items=explode('|',file_get_contents($saltfile));
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return $items[1];
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}
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?>
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