1、假设充许连结图片的主机域名为:www.test.com 2、修改httpd.conf SetEnvIfNoCase Referer "^http://www.test.com/" local_ref=1 使用以上的方法当从非指定的主机连结图片时,图片将无法显示,如果希望显示一张“禁止盗链”的图片,我们可以用mod_rewrite 来实现。 首先在安装 apache 时要加上 --enable-rewrite 参数加载 mod_rewrite 模组。 假设“禁止盗链”的图片为abc.gif,我们在 httpd.conf 中可以这样配置: RewriteEngine on 一段防盗连的PHP代码 $ADMIN[defaulturl] = "http://www.163.com/404.htm";//盗链返回的地址 使用方法:将上述代码保存为dao4.php
Order Allow,Deny
Allow from env=local_ref
这个简单的应用不光可以解决图片盗链的问题,稍加修改还可以防止任意文件盗链下载的问题。
RewriteCond %{HTTP_REFERER} !^$
RewriteCond %{HTTP_REFERER} !^http://(www.)?test.com /.*$ [NC]
RewriteRule .(gif|jpg)$ http://www.test.com/abc.gif [R,L]
当主机的图片被盗链时,只会看到 abc.gif 这张“禁止盗链”的图片!
$okaysites = array("http://www.163.com/","http://163.com"); //白名单
$ADMIN[url_1] = "http://www.163.com/download/";//下载地点1
$ADMIN[url_2] = "";//下载地点2,以此类推
$reffer = $HTTP_REFERER;
if($reffer) {
$yes = 0;
while(list($domain, $subarray) = each($okaysites)) {
if (ereg($subarray,"$reffer")) {
$yes = 1;
}
}
$theu = "url"."_"."$site";
if ($ADMIN[$theu] AND $yes == 1) {
header("Location: $ADMIN[$theu]/$file");
} else {
header("Location: $ADMIN[defaulturl]");
}
} else {
header("Location: $ADMIN[defaulturl]");
}
?>

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