88 lines
2.4 KiB
PHP
Executable File
88 lines
2.4 KiB
PHP
Executable File
<?php
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class TcpStat
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{
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const SS_NETSTAT_TCP_STATE_MAP = [
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"established" => "ESTABLISHED",
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"syn-sent" => "SYN_SENT",
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"syn-recv" => "SYN_RCVD",
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"fin-wait-1" => "FIN_WAIT_1",
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"fin-wait-2" => "FIN_WAIT_2",
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"time-wait" => "TIME_WAIT",
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"closed" => "CLOSED",
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"close-wait" => "CLOSE_WAIT",
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"last-ack" => "LAST_ACK",
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"listen" => "LISTEN",
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"closing" => "CLOSING",
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];
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public static function xCount($path)
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{
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if (PHP_OS === "Darwin") {
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$n = `netstat -x | grep $path | wc -l`;
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return intval(trim($n));
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} else {
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$n = `ss -x src $path | wc -l`;
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return intval(trim($n)) - 1;
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}
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}
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public static function count($host, $port, $states = ["established", "time-wait", "close-wait"]) {
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if (!ip2long($host)) {
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$host = gethostbyname($host);
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}
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$pipe = "wc -l";
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$func = PHP_OS === "Darwin" ? "netstat" : "ss";
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$states = static::fmtTcpState($states, $func);
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$info = [];
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foreach ($states as $state) {
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$ret = call_user_func([static::class, $func], $host, $port, $state, $pipe);
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$info[$state] = intval(trim($ret)) - 1;
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}
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return $info;
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}
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private static function netstat($host, $port, $state, $pipe = "")
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{
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if ($pipe) {
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$pipe = " | $pipe";
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}
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// $4 src $5 dst $6 stats
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return `netstat -an | awk '(\$5 == "$host.$port" && \$6 == "$state") || NR==2 {print \$0}' $pipe`;
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}
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private static function ss($host, $port, $state, $pipe = "")
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{
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if ($pipe) {
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$pipe = " | $pipe";
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}
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return `ss state $state dst $host:$port $pipe`;
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}
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private static function fmtTcpState(array $states, $type)
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{
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$from = $to = [];
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if ($type === "ss") {
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$to = static::SS_NETSTAT_TCP_STATE_MAP;
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$from = array_flip($to);
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} else if ($type === "netstat") {
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$from = static::SS_NETSTAT_TCP_STATE_MAP;
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$to = array_flip($from);
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}
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$ret = [];
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foreach ($states as $state) {
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if (isset($to[$state])) {
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$ret[] = $state;
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} else if (isset($from[$state])) {
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$ret[] = $from[$state];
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}
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}
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return $ret;
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}
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}
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