mirror of
https://github.com/vichan-devel/vichan.git
synced 2024-11-28 17:31:00 +01:00
32 lines
786 B
PHP
32 lines
786 B
PHP
<?php
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header("Pragma-directive: no-cache");
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header("Cache-directive: no-cache");
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header("Cache-control: no-cache");
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header("Pragma: no-cache");
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header("Expires: 0");
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function get_custom_banner(&$b) {
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# Validate the board name
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if (!(isset($b) && preg_match('/^[a-z0-9]{1,10}$/', $b)))
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return null;
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# Check if directory exists
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$dir = "static/banners/$b/";
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if (!is_dir($dir))
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return null;
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# Return random file if directory is not empty
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$banners = array_diff(scandir($dir), array('..', '.'));
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if (!$banners)
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return null;
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$r = array_rand($banners);
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return $dir.$banners[$r];
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}
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$banner = get_custom_banner($_GET['board']);
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if ($banner)
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header("Location: $banner");
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else
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header("Location: static/8chan banner.png");
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