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Nginx 使用 PHP 进行 IMAP 的认证

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Lepaskan: 2016-05-25 17:15:10
asal
1328 orang telah melayarinya

首先假设一下条件:

Your Proxy server for pop/imap is running on 192.168.1.1

You have 2 backend pop/imap servers: 192.168.1.22 and 192.168.1.33

You have a webserver that you will use for the authentication and redirection logic 192.168.1.44.

The authentication script is /mail/auth.php

<?php

if (!isset($_SERVER["HTTP_AUTH_USER"] ) || !isset($_SERVER["HTTP_AUTH_PASS"] )){
fail();
}
$username=$_SERVER["HTTP_AUTH_USER"] ;
$userpass=$_SERVER["HTTP_AUTH_PASS"] ;
$protocol=$_SERVER["HTTP_AUTH_PROTOCOL"] ;
// default backend port
$backend_port=110;
if ($protocol=="imap") {
$backend_port=143;
}
if ($protocol=="smtp") {
$backend_port=25;
}
// nginx likes ip address so if your
// application gives back hostname, convert it to ip address here
$backend_ip["mailhost01"] ="192.168.1.22";
$backend_ip["mailhost02"] ="192.168.1.33";
// Authenticate the user or fail
if (!authuser($username,$userpass){
fail();
exit;
}
// Get the server for this user if we have reached so far
$userserver=getmailserver($username);
// Get the ip address of the server
// We are assuming that you backend returns hostname
// We try to get the ip else return what we got back
$server_ip=(isset($backend_ip[$userserver] )?$backend_ip[$userserver] :$userserver;
// Pass!
pass($server_ip, $backend_port);

//END


function authuser($user,$pass){
 // put your logic here to authen the user to any backend
 // you want (datbase, ldap, etc)
 // for example, we will just return true;
 return true;
}

function getmailserver($user){
 // put the logic here to get the mailserver
 // backend for the user. You can get this from
 // some database or ldap etc
 // dummy logic, all users that start with a,c,f and g get mailhost01
 // the others get mailhost02
 if in_array(substr($user,0,1), array("a","c","f","g")){
 return"mailhost01";
 } else {
 return"mailhost02";
}
}

function fail(){
 header("Auth-Status: Invalid login or password");
exit;
}

function pass($server,$port){
 header("Auth-Status: OK");
 header("Auth-Server: $server");
 header("Auth-Port: $port");
exit;
}
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