生成nginx配置文件，反向代理google

生成nginx配置文件，反向代理google

生成nginx配置文件，反向代理google

google的ip地址经常改变，所以要用nslookup去更新ip

#!/bin/env php
<?php
 
define("CONF_PATH", '/usr/local/nginx/conf/hosts');
 
$google_ips = __DIR__ . "/google_ips.txt"; // 保存IP地址文件
$ngx_cnf = CONF_PATH . "/51open.conf";     // NGINX配置文件
 
exec("nslookup google.com", $out, $ret); 
 
$start = false;
$ips = [];
 
foreach($out as $line) {
    // answer: 之后的是服务器对应IP
    if (false !== strpos($line, "answer:")) {
        $start = true;
    } else if (!$start) {
        continue;
    }
 
    preg_match("/Address: ((?:(?:25[0-5]|2[0-4]\d|((1\d{2})|([1-9]?\d)))\.)
    {3}(?:25[0-5]|2[0-4]\d|((1\d{2})|([1-9]?\d))))/i", $line, $matches);
    if (!empty($matches) && isset($matches[1])) {
        $ips[] = $matches[1];
    }
}
 
// 保存的IP地址
if (file_exists($google_ips)) {
    $data = file_get_contents($google_ips);
    if ($data) {
        $arr = unserialize($data);
        if (isset($arr['ips']) && date('Ymd', $arr['__logtime'])==date('Ymd')) {
            $ips = array_merge($ips, $arr['ips']);
            $ips = array_unique($ips);
        }
    }
}
 
$data = ['__logtime' => time(), 'ips' => $ips];
file_put_contents($google_ips, serialize($data));
 
$str = '';
foreach ($ips as $ip) {
    $str .= sprintf("\n    server %s:80 max_fails=3;", $ip);
}
 
if (!$str) {
    exit;
}
 
$ngx_tpl = <<<EOT
client_body_buffer_size    512k;  
proxy_connect_timeout      5;  
proxy_read_timeout         60;  
proxy_send_timeout         5;  
proxy_buffer_size          16k;  
proxy_buffers              4 64k;  
proxy_busy_buffers_size    128k;  
proxy_temp_file_write_size 128k;
 
#levels设置目录层次
#keys_zone设置缓存名字和共享内存大小
#inactive在指定时间内没人访问则被删除在这里是1天
#max_size最大缓存空间
proxy_cache_path /data/cache/nginx/51open levels=1:2 keys_zone=51open:20m inactive=1d max_size=2g;
 
upstream google {%s
}
 
server {
    listen       80;
    server_name  g.51open.net google.51open.net;
 
    rewrite ^(.*)\$  https://\$host\$1 permanent;     
}
 
server {
    listen       443;
    server_name  g.51open.net google.51open.net;
 
    ssl on;
    ssl_certificate      /usr/local/nginx/conf/hosts/ssl/g.51open.net.crt;
    ssl_certificate_key  /usr/local/nginx/conf/hosts/ssl/g.51open.net.key;         
 
    location / {
        proxy_cache         51open;
        proxy_cache_key     \$host\$uri\$is_args\$args;
        proxy_cache_valid   200 304 301 302 3d;   #哪些状态缓存多长时间
        proxy_cache_valid   any 1d;               #其他的缓存多长时间
 
        proxy_redirect      https://www.google.com/ /;
        proxy_cookie_domain google.com g.51open.net;
        proxy_pass          http://google;
        proxy_set_header    Host "www.google.com";
        proxy_set_header    Accept-Encoding "";
        proxy_set_header    User-Agent \$http_user_agent;
        proxy_set_header    Accept-Language "zh-CN";
        proxy_set_header    Cookie "PREF=ID=047808f19f6de346:U=0f62f33dd8549d11:FF=2:LD=zh-CN:NW=1:
        TM=1325338577:LM=1332142444:GM=1:SG=2:S=rE0SyJh2w1IQ-Maw";             
         
        # --- 关键字替换 start --- #
        sub_filter_types text/css text/xml text/javascript; # 过滤类型
        sub_filter ssl.gstatic.com g.51open.net;            # google会加载ssl.gstatic.com的几个资源和文件
        sub_filter www.google.com  g.51open.net;
        sub_filter_once off;
        # --- 关键字替换  end  --- #
    }
 
    ## 反向代理ssl.gstatic.com ##
    location /gb {
        proxy_cache         51open;
        proxy_cache_key     \$host\$uri\$is_args\$args;
        proxy_cache_valid   200 304 301 302 3d;   #哪些状态缓存多长时间
        proxy_cache_valid   any 1d;               #其他的缓存多长时间
 
        proxy_pass          http://ssl.gstatic.com/gb/;
        proxy_cookie_domain ssl.gstatic.com g.51open.net;
        proxy_set_header    Accept-Encoding "";
        proxy_set_header    User-Agent \$http_user_agent;
        proxy_set_header    Accept-Language "zh-CN";
    }
}
EOT;
 
$content = sprintf($ngx_tpl, $str);
 
file_put_contents($ngx_cnf, $content);

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