<p style="margin-top: 0px; margin-bottom: 10px; padding-top: 0px; padding-bottom: 0px;">1.首先簡單說說wifidog認證的過程
客戶端首次連接到wifi後,瀏覽器請求將會被重定向到:
login/?gw_address=%s&gw_port=%d&gw_id=%s&url=%s
驗證通過後,客戶端被重定向到網關,url格式如下:
http://網關地址:網關端口/wifidog/auth?token=
wifidong會啓動一個線程週期性地報告每一個用戶的狀態信息,並通過如下地址發送給認證
服務器:
auth_server:/auth/?stage=
ip=
mac=
token=
incoming=
outgoing=
認證服務器根據該狀態信息決定是否允許該用戶繼續連接,並回復網關,回覆格式爲:Auth:狀態碼,
如:Auth:1
常用狀態碼:
0:AUTH_DENIED,表示拒絕
1:AUTH_ALLOWED,驗證通過
驗證通過後,將重定向到如下地址:
portal/?gw_id=%s
wifidog的ping協議
wifidog通過ping協議將當前狀態信息發送給認證服務器,發送地址爲:
http://auth_sever/ping/?
gw_id=%s
sys_uptime=%lu
sys_memfree=%u
sys_load=%.2f
wifidog_uptime=%lu
認證服務器須返回一個“Pong”作爲迴應。
具體php實現代碼如下
<pre code_snippet_id="335795" snippet_file_name="blog_20140509_1_6007550" name="code">public function auth()
{
<span style="white-space:pre"> </span>//響應客戶端的定時認證,可在此處做各種統計、<a title="計費" href="index.php?c=search&key=%E8%AE%A1%E8%B4%B9" target="_blank">計費</a>等等
<span style="white-space:pre"> </span>/*
<span style="white-space:pre"> </span>wifidog 會通過這個接口傳遞連接客戶端的信息,然後根據返回,對客戶端做<a title="開通" href="index.php?c=search&key=%E5%BC%80%E9%80%9A" target="_blank">開通</a>、斷開等處理,具體返回值可以看wifidog的文檔
<span style="white-space:pre"> </span>wifidog主要提交如下參數
<span style="white-space:pre"> </span>1.ip
<span style="white-space:pre"> </span>2. mac
<span style="white-space:pre"> </span>3. token(login頁面<a title="下發" href="index.php?c=search&key=%E4%B8%8B%E5%8F%91" target="_blank">下發</a>的token)
<span style="white-space:pre"> </span>4.incoming 下載流量
<span style="white-space:pre"> </span>5.outgoing 上傳流量
<span style="white-space:pre"> </span>6.stage 認證階段,就兩種 login 和 counters
<span style="white-space:pre"> </span>*/
<span style="white-space:pre"> </span>$stage = $_GET['stage'] == 'counters'?'counters':'login';
<span style="white-space:pre"> </span>if($stage == 'login')
<span style="white-space:pre"> </span>{
<span style="white-space:pre"> </span>//XXXX跳過login 階段的處理XXXX不能隨便跳過的
<span style="white-space:pre"> </span>//默認返回 允許
<span style="white-space:pre"> </span>echo "Auth: 1";
<span style="white-space:pre"> </span>}
<span style="white-space:pre"> </span>else if($stage == 'counters')
<span style="white-space:pre"> </span>{
<span style="white-space:pre"> </span>//做一個簡單的流量判斷驗證,下載流量超值時,返回<a title="下線" href="index.php?c=search&key=%E4%B8%8B%E7%BA%BF" target="_blank">下線</a>通知,否則保持在線
<span style="white-space:pre"> </span>if(!empty($_GET['incoming']) and $_GET['incoming'] > 10000000)
<span style="white-space:pre"> </span>{
<span style="white-space:pre"> </span>echo "Auth: 0";
<span style="white-space:pre"> </span>}else{
<span style="white-space:pre"> </span>echo "Auth: 1\n";
<span style="white-space:pre"> </span>}
<span style="white-space:pre"> </span>}
<span style="white-space:pre"> </span>else
<span style="white-space:pre"> </span>echo "Auth: 0"; //其他情況都返回拒絕
<span style="white-space:pre"> </span>
<span style="white-space:pre"> </span> <span style="white-space:pre"> </span>
<span style="white-space:pre"> </span>/*
<span style="white-space:pre"> </span>返回值:主要有這兩種就夠了
<span style="white-space:pre"> </span>0 - 拒絕
<span style="white-space:pre"> </span>1 - <a title="放行" href="index.php?c=search&key=%E6%94%BE%E8%A1%8C" target="_blank">放行</a>
<span style="white-space:pre"> </span>官方文檔如下
<span style="white-space:pre"> </span>0 - AUTH_DENIED - User firewall users are deleted and the user removed.
<span style="white-space:pre"> </span>6 - AUTH_VALIDATION_FAILED - User email validation timeout has occured and user/firewall is deleted(用戶郵件驗證超時,防火牆關閉該用戶)
<span style="white-space:pre"> </span>1 - AUTH_ALLOWED - User was valid, add firewall rules if not present
<span style="white-space:pre"> </span>5 - AUTH_VALIDATION - Permit user access to email to get validation email under default rules (用戶郵件驗證時,向用戶開放email)
<span style="white-space:pre"> </span>-1 - AUTH_ERROR - An error occurred during the validation process
<span style="white-space:pre"> </span>*/
}
public function portal()
{
<span style="white-space:pre"> </span>/*
<span style="white-space:pre"> </span> wifidog 帶過來的參數 如下
<span style="white-space:pre"> </span>1. gw_id
<span style="white-space:pre"> </span>*/
<span style="white-space:pre"> </span>//重定到指定網站 或者 顯示splash廣告頁面
<span style="white-space:pre"> </span>redirect('http://www.baidu.com', 'location', 302);
<span style="white-space:pre"> </span>
}
public function ping()
{
<span style="white-space:pre"> </span>//url請求 "gw_id=$gw_id&sys_uptime=$sys_uptime&sys_memfree=$sys_memfree&sys_load=$sys_load&wifidog_uptime=$wifidog_uptime";
<span style="white-space:pre"> </span>//log_message($this->config->item('MY_log_threshold'), __CLASS__.':'.__FUNCTION__.':'.debug_printarray($_GET));
<span style="white-space:pre"> </span>//判斷各種參數是否爲空
<span style="white-space:pre"> </span>if( !(isset($_GET['gw_id']) and isset($_GET['sys_uptime']) and isset($_GET['sys_memfree']) and isset($_GET['sys_load']) and isset($_GET['wifidog_uptime']) ) )
<span style="white-space:pre"> </span>{
<span style="white-space:pre"> </span>echo '{"error":"2"}';
<span style="white-space:pre"> </span>return;
<span style="white-space:pre"> </span>}
<span style="white-space:pre"> </span>//添加<a title="心跳" href="index.php?c=search&key=%E5%BF%83%E8%B7%B3" target="_blank">心跳</a>日誌處理功能
<span style="white-space:pre"> </span>/*
<span style="white-space:pre"> </span>此處可獲取 wififog提供的 如下參數
<span style="white-space:pre"> </span>1.gw_id 來自wifidog 配置文件中,用來區分不同的路由設備
<span style="white-space:pre"> </span>2.sys_uptime 路由器的系統啓動時間
<span style="white-space:pre"> </span>3.sys_memfree 系統內存使用百分比
<span style="white-space:pre"> </span>4.wifidog_uptime wifidog持續運行時間(這個數據經常會有問題)
<span style="white-space:pre"> </span>*/
<span style="white-space:pre"> </span>//返回值
<span style="white-space:pre"> </span>echo 'Pong';
}
/**
* wifidog 的gw_message 接口,信息提示頁面
*/
function gw_message()
{
<span style="white-space:pre"> </span>if (isset($_REQUEST["message"])) {
<span style="white-space:pre"> </span>switch ($_REQUEST["message"]) {
<span style="white-space:pre"> </span>case 'failed_validation':
<span style="white-space:pre"> </span>//auth的stage爲login時,被服務器返回AUTH_VALIDATION_FAILED時,<a title="來到" href="index.php?c=search&key=%E6%9D%A5%E5%88%B0" target="_blank">來到</a><a title="該處" href="index.php?c=search&key=%E8%AF%A5%E5%A4%84" target="_blank">該處</a>處理
<span style="white-space:pre"> </span>//認證失敗,請重新認證
<span style="white-space:pre"> </span>break;
<span style="white-space:pre"> </span>case 'denied':
<span style="white-space:pre"> </span>//auth的stage爲login時,被服務器返回AUTH_DENIED時,來到該處處理
<span style="white-space:pre"> </span>//認證被拒
<span style="white-space:pre"> </span>break;
<span style="white-space:pre"> </span>case 'activate':
<span style="white-space:pre"> </span>//auth的stage爲login時,被服務器返回AUTH_VALIDATION時,來到該處處理
<span style="white-space:pre"> </span>//待激活
<span style="white-space:pre"> </span>break;
<span style="white-space:pre"> </span>default:
<span style="white-space:pre"> </span>break;
<span style="white-space:pre"> </span>}
<span style="white-space:pre"> </span>}else{
<span style="white-space:pre"> </span>//不回顯任何信息
<span style="white-space:pre"> </span>}
}</pre>
</p>