mirror of
https://github.com/phpbb/phpbb.git
synced 2025-02-20 16:15:00 +01:00
83 lines
2.5 KiB
PHP
83 lines
2.5 KiB
PHP
<?php
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//
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// Security message:
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//
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// This script is potentially dangerous.
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// Remove or comment the next line (die(".... ) to enable this script.
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// Do NOT FORGET to either remove this script or disable it after you have used it.
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//
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die("Please read the first lines of this script for instructions on how to enable it");
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// IP regular expressions
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$dec_octet = '(?:\d{1,2}|1\d\d|2[0-4]\d|25[0-5])';
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$h16 = '[\dA-F]{1,4}';
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$ipv4 = "(?:$dec_octet\.){3}$dec_octet";
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$ls32 = "(?:$h16:$h16|$ipv4)";
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$ipv6_construct = array(
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array(false, '', '{6}', $ls32),
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array(false, '::', '{5}', $ls32),
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array('', ':', '{4}', $ls32),
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array('{1,2}', ':', '{3}', $ls32),
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array('{1,3}', ':', '{2}', $ls32),
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array('{1,4}', ':', '', $ls32),
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array('{1,5}', ':', false, $ls32),
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array('{1,6}', ':', false, $h16),
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array('{1,7}', ':', false, '')
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);
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$ipv6 = '(?:';
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foreach ($ipv6_construct as $ip_type)
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{
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$ipv6 .= '(?:';
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if ($ip_type[0] !== false)
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{
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$ipv6 .= "(?:$h16:)" . $ip_type[0];
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}
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$ipv6 .= $ip_type[1];
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if ($ip_type[2] !== false)
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{
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$ipv6 .= "(?:$h16:)" . $ip_type[2];
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}
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$ipv6 .= $ip_type[3] . ')|';
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}
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$ipv6 = substr($ipv6, 0, -1) . ')';
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echo 'IPv4: ' . $ipv4 . "<br />\nIPv6: " . $ipv6 . "<br />\n";
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// URL regular expressions
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$pct_encoded = "%[\dA-F]{2}";
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$unreserved = 'a-z0-9\-._~';
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$sub_delims = '!$&\'()*+,;=';
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$pchar = "(?:[$unreserved$sub_delims:@|]+|$pct_encoded)"; // rfc: no "|"
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$scheme = '[a-z][a-z\d+\-.]*';
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$reg_name = "(?:[$unreserved$sub_delims|@]+|$pct_encoded)+"; // rfc: * instead of + and no "|" and no "@" (included instead of userinfo
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//$userinfo = "(?:(?:[$unreserved$sub_delims:]+|$pct_encoded))*";
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$ipv4_simple = '[0-9.]+';
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$ipv6_simple = '\[[a-z0-9.]+:[a-z0-9.]+:[a-z0-9.:]+\]';
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$host = "(?:$reg_name|$ipv4_simple|$ipv6_simple)";
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$port = '\d*';
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//$authority = "(?:$userinfo@)?$host(?::$port)?";
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$authority = "$host(?::$port)?";
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$segment = "$pchar*";
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$path_abempty = "(?:/$segment)*";
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$hier_part = "/{2}$authority$path_abempty";
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$query = "(?:[$unreserved$sub_delims:@/?|]+|$pct_encoded)*"; // pchar | "/" | "?", rfc: no "|"
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$fragment = $query;
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$url = "$scheme:$hier_part(?:\?$query)?(?:\#$fragment)?";
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echo 'URL: ' . $url . "<br />\n";
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// no scheme, shortened authority, but host has to start with www.
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$www_url = "www\.$reg_name(?::$port)?$path_abempty(?:\?$query)?(?:\#$fragment)?";
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echo 'www.URL: ' . $www_url . "<br />\n";
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// no schema and no authority
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$relative_url = "$segment$path_abempty(?:\?$query)?(?:\#$fragment)?";
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echo 'relative URL: ' . $relative_url . "<br />\n";
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?>
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