Ref/tcpwrap-Phpdoc专题

tcpwrap_check

Performs a tcpwrap check

说明

bool <span class="methodname">tcpwrap_check ( <span class="methodparam">string $daemon , string $address [, <span class="type">string $user [, <span class="methodparam">bool $nodns<span class="initializer"> = false ]] )

This function consults the /etc/hosts.allow and /etc/hosts.deny files to check if access to service daemon should be granted or denied for a client.

参数

daemon
The service name.

address
The client remote address. Can be either an IP address or a domain name.

user
An optional user name.

nodns
If address looks like domain name then DNS is used to resolve it to IP address; set nodns to true to avoid this.

返回值

This function returns true if access should be granted, false otherwise.

范例

示例 #1 Deny all connections from localhost

If your /etc/hosts.deny file contains:

php: 127.0.0.1

And your code looks like:

<?php
if (!tcpwrap_check('php', $_SERVER['REMOTE_ADDR'])) {
  die('You are not welcome here');
}
?>

参见

For more details please consult hosts_access(3) man page.

目录

• tcpwrap_check — Performs a tcpwrap check