Nginx实现非套路镜像站的踩坑记录

location ^~ /book-c/
{
 proxy_pass http://akaedu.github.io/book/;
 proxy_redirect off;
 proxy_http_version 1.1;
 proxy_set_header Upgrade $http_upgrade;
 proxy_set_header Connection "upgrade";
}

rewrite ^/book-(.*?)/  /index.php?m=Book&a=show&book=$1 last;

class BookAction extends Action{
 private $uri;
 public function show(){
 $book = $_GET['book'];
 if (!method_exists($this,$book)){
  $this->error404();
 }
 try{
  $this->$book();
 }catch (Exception $e){
  $this->error404();
 }
 }

 /**
 * http://akaedu.github.io/book/
 */
 private function c(){
 $baseUrl = "http://akaedu.github.io/book/";
 $url = $baseUrl.$this->uri;
 echo file_get_contents($url);
 }
}

location ~ .*\.(js|css)?$
{
 expires 12h;
}

location ~ /book-.*?/
{
 rewrite ^/book-(.*?)/ /index.php?m=Book&a=show&book=$1 last;
}

$ wget -S https://mengkang.net/book-c/styles.css -O /dev/null
--2018-02-01 13:13:36-- https://mengkang.net/book-c/styles.css
Resolving mengkang.net... 203.195.188.207
Connecting to mengkang.net|203.195.188.207|:443... connected.
HTTP request sent, awaiting response...
 HTTP/1.1 200 OK
 Server: nginx
 Date: Thu, 01 Feb 2018 05:13:38 GMT
 Content-Type: text/html; charset=UTF-8

<?php
class BookAction extends Action{
 const BOOK_SAVE_DIR = "/data/book/";
 private $uri;
 private $baseUrl;
 private $book;
 private $bookname;
 public function show(){
 $book = $_GET['book'];
 $this->book = $book;
 $this->uri = str_replace("/book-{$book}/","",$_SERVER['REQUEST_URI']);
 if (!method_exists($this,$book)){
  $this->error404();
 }
 try{
  $this->$book();
 }catch (Exception $e){
  $this->error404();
 }
 }
 /**
 * http://akaedu.github.io/book/
 */
 private function c(){
 $this->baseUrl = "http://akaedu.github.io/book/";
 $url = $this->baseUrl.$this->uri;
 $this->output($url);
 }
 private function output($url){
 $ext = pathinfo($url,PATHINFO_EXTENSION);
 if (!$ext) {
  $url = $url."/index.html";
  $ext = "html";
 }
 switch ($ext){
  case "css":
  header("Content-Type: text/css; charset=UTF-8");
  break;
  default:
  header("Content-Type: text/html; charset=UTF-8");
  break;
 }
 // 如果已经缓存
 $filename = self::BOOK_SAVE_DIR.$this->book."/".str_replace($this->baseUrl,"",$url);
 if (file_exists($filename)){
  $data = file_get_contents($filename);
 }else{
  $data = file_get_contents($url);
  $dir = dirname($filename);
  if (!file_exists($dir)){
  mkdir($dir,755,true);
  }
  file_put_contents($filename,$data);
 }
 // 增加原始版权说明
 echo $data;
 }
}