Added rfc8416.php
Is trying to get the hang of generating a local exception list for use with routinator by NLnet Labs. - NLnet Labs: https://nlnetlabs.nl/ - Routinator: https://github.com/NLnetLabs/routinator - RFC: https://tools.ietf.org/html/rfc8416
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rfc8416.php
Executable file
247
rfc8416.php
Executable file
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<?php
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// Before we begin. Ensure registry repository is up-to-date
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echo shell_exec("/usr/bin/git -C ../registry/ pull origin master:master 2>&1");
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/*
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* Function:
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* startsWith ($string, "word", $length)
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*
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* Find lines beginning with "word". Optionally
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* give the length of the string you are looking for.
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*/
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function startsWith ($haystack, $needle, $length = "0")
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{
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if ($length <= 0 || $length > (strlen ($needle)))
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$length = strlen ($needle);
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return (substr ($haystack, 0, $length) === $needle);
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}
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/*
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* Function:
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* endsWith ($string, "word")
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*
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* Find lines ending with "word".
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*/
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function endsWith ($haystack, $needle)
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{
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$length = strlen ($needle);
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if ($length == 0)
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return true;
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return (substr( $haystack, -$length) === $needle);
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}
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/*
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* Function:
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* trim_special_chars ($string)
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*
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* Remove special characters.
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*/
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function trim_special_chars ($string)
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{
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return (trim ($string, " \t\n\r\0\x0B"));
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}
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// Define array() we are going to populate with data.
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$roas = array();
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$roas["slurmVersion"] = 1;
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// Set folders we need to scan.
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$files6 = scandir("../registry/data/route6/");
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$files4 = scandir("../registry/data/route/");
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/*
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*
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* IPv6
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*
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*/
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$i = 0; // Counter used with tmp $raw_array.
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$raw_array = array(); // tmp array() used for storing data to be processed
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foreach ($files6 as $file)
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{
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$j = 0;
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/*
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* route6 with maxLength value set:
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* - fd42:5d71:219::/48
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*
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* $ cat ../registry/data/route6/fd42:5d71:219::_48
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* route6: fd42:5d71:219::/48
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* origin: AS4242420119
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* max-length: 48
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* mnt-by: JRB0001-MNT
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* source: DN42
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*/
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$data = file("../registry/data/route6/$file");
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foreach ($data as $str)
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{
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$str = trim_special_chars ($str);
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if (startsWith ($str, ("max"), 3)) $raw_array[$i]["max"] = $str;
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elseif (startsWith ($str, ("source"), 6)) $raw_array[$i]["source"] = $str;
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elseif (startsWith ($str, ("route"), 5)) $raw_array[$i]["route"] = $str;
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elseif (startsWith ($str, ("origin"), 6)) $raw_array[$i]["asn"][$j++] = $str;
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// Catch max-length not set in route object.
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if (empty ($raw_array[$i]["max"])) $raw_array[$i]["max"] = -1;
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}
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$i++;
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}
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$k = 0;
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foreach ($raw_array as $sub_array)
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{
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// Extract prefix and subnet size
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// Match prefix sizes 29-64, 80.
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$prefix = array();
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preg_match("/([a-f0-9\:]{0,128})\/(29|[3-5][0-9]|6[0-4]|80)/",
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explode("6: ", $sub_array["route"])[1],
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$prefix);
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// Extract ta information
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$source = array();
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preg_match ("/([A-Z0-4]+)/",
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explode(":", $sub_array["source"])[1],
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$source);
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// Try to extract max-length information
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$maxlength = array();
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if (($sub_array["max"]) != -1)
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preg_match ("/([0-9]+)/",
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explode(":", $sub_array["max"])[1],
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$maxlength);
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// Store extracted values
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$_prefix = $prefix[0];
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$_ta = (isset ($source[0]) ? $source[0] : "");
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// We need to do conditional setting of maxLength to avoid errornous output.
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if (($sub_array["max"]) != -1)
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$_maxlength = (isset ($maxlength[0]) ? $maxlength[0] : "");
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else
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// Do fallback to default prefix size if max-length was not set.
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$_maxlength = $prefix[2];
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// Loop through each asn in single route6 object and assign
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// other values accordingly.
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foreach ($sub_array["asn"] as $asn)
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{
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// Extract ASxxxxx from string.
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preg_match ("/AS[0-9]+/", explode (":", $asn)[1], $_asn);
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$roas["locallyAddedAssertions"]["prefixAssertions"][$k]["asn"] = $_asn[0];
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$roas["locallyAddedAssertions"]["prefixAssertions"][$k]["prefix"] = $_prefix;
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$roas["locallyAddedAssertions"]["prefixAssertions"][$k]["maxPrefixLength"] = $_maxlength;
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$roas["locallyAddedAssertions"]["prefixAssertions"][$k]["comment"] = $_ta;
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$k++;
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}
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}
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/*
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*
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* IPv4
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*
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*/
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$i = 0; // Counter used with tmp $raw_array.
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$raw_array = array(); // tmp array() used for storing data to be processed
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foreach ($files4 as $file)
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{
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$j = 0;
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/*
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* route with maxLength value set:
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* - 172.20.1.0/24
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*
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* $ cat ../registry/data/route/172.20.1.0_24
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* route: 172.20.1.0/24
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* origin: AS4242420119
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* max-length: 24
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* mnt-by: JRB0001-MNT
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* source: DN42
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*/
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$data = file("../registry/data/route/$file");
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foreach ($data as $str)
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{
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$str = trim_special_chars ($str);
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if (startsWith ($str, ("max"), 3)) $raw_array[$i]["max"] = $str;
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elseif (startsWith ($str, ("source"), 6)) $raw_array[$i]["source"] = $str;
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elseif (startsWith ($str, ("route"), 5)) $raw_array[$i]["route"] = $str;
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elseif (startsWith ($str, ("origin"), 6)) $raw_array[$i]["asn"][$j++] = $str;
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// Catch max-length not set in route object.
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if (empty ($raw_array[$i]["max"])) $raw_array[$i]["max"] = -1;
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}
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$i++;
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}
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foreach ($raw_array as $sub_array)
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{
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// Extract prefix and subnet size
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// Match prefix sizes 8-32.
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$prefix = array();
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preg_match("/([0-9\.]{7,15})\/([8-9]|[1-2][0-9]|3[0-2])/",
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explode(":", $sub_array["route"])[1],
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$prefix);
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// Extract ta information
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$source = array();
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preg_match ("/([A-Z0-4]+)/",
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explode(":", $sub_array["source"])[1],
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$source);
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// Try to extract max-length information
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$maxlength = array();
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if (($sub_array["max"]) != -1)
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preg_match ("/([0-9]+)/",
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explode(":", $sub_array["max"])[1],
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$maxlength);
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// Store extracted values
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$_prefix = $prefix[0];
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$_ta = (isset ($source[0]) ? $source[0] : "");
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// We need to do conditional setting of maxLength to avoid errornous output.
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if (($sub_array["max"]) != -1)
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$_maxlength = (isset ($maxlength[0]) ? $maxlength[0] : "");
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else
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// Do fallback to default prefix size if max-length was not set.
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$_maxlength = $prefix[2];
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// Loop through each asn in single route6 object and assign
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// other values accordingly.
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foreach ($sub_array["asn"] as $asn)
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{
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// Extract ASxxxxx from string.
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preg_match ("/AS[0-9]+/", explode (":", $asn)[1], $_asn);
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$roas["locallyAddedAssertions"]["prefixAssertions"][$k]["asn"] = $_asn[0];
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$roas["locallyAddedAssertions"]["prefixAssertions"][$k]["prefix"] = $_prefix;
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$roas["locallyAddedAssertions"]["prefixAssertions"][$k]["maxPrefixLength"] = $_maxlength;
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$roas["locallyAddedAssertions"]["prefixAssertions"][$k]["comment"] = $_ta;
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$k++;
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}
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}
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// Do JSON encoding before writing result to file
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$json = json_encode($roas, JSON_UNESCAPED_SLASHES|JSON_PRETTY_PRINT);
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// Write JSON to file
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$fp = fopen('dn42-rfc8416-export.json', 'w');
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fwrite($fp, $json);
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fclose($fp);
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// Commit and push to all git remote repositories
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echo shell_exec("./update.sh 2>&1");
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?>
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