Nginx 反代 Imgur

最近在弄自用图床，主要考虑两个点：一是上传必须方便，二是方便管理，我后期如果不打算分享了，可以删除或者屏蔽。

Imgur 是个不错的选择（另一个选择是 OneDrive 但总感觉分享太麻烦），唯一不愉快的地方是近期被墙了，所以做个反代吧。

先上 Nginx 配置：

server {
    listen 80;
    server_name imgur.ihainan.me;
    return 301 https://$host$request_uri;
}

server {
    listen  443 ssl;
    server_name imgur.ihainan.me;

    if ($server_port !~ 443){
        rewrite ^(/.*)$ https://$host$1 permanent;
    }

    location / {
        # Proxy
        proxy_pass https://i.imgur.com/;
        proxy_http_version 1.1;
    		
        # Limitations
        client_max_body_size    1000m;
        proxy_read_timeout 300s;
        proxy_send_timeout 300s;

        # Headers
        proxy_set_header Referer "";
        proxy_set_header User-Agent "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/74.0.3729.169 Safari/537.36";
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header Upgrade "websocket";
        proxy_set_header Connection "Upgrade";
    }

    ssl_certificate    /etc/letsencrypt/live/ihainan.me/fullchain.pem;
    ssl_certificate_key    /etc/letsencrypt/live/ihainan.me/privkey.pem;
}

SSL 配置、HTTP 转 HTTPS 这些比较简单的就不用多说了，主要是 Referer 设为空来绕过防盗链处理，以及 Imgur 对于移动端请求会跳转到 Imgur 官网然后要求你下载 App，所以我直接把 User-Agent 给写死了省事点（也很不厚道…）。

测试地址：

Test Image

另附上油猴脚本和 Safari 书签，方便在桌面端和移动端快速拷贝 URL：

browser

// ==UserScript==
// @name         Imgur Helper
// @namespace    http://tampermonkey.net/
// @version      0.1
// @description  try to take over the world!
// @author       ihainan
// @include      https://imgur.com/*
// @grant        none
// @require http://code.jquery.com/jquery-3.3.1.min.js
// ==/UserScript==

(function() {
    'use strict';

    let $ = window.jQuery;
    function replaceURL() {
        $('.PostContent-imageWrapper').each(function(i, elem) {
            let url = elem.querySelector(".PostContent-imageWrapper-rounded").querySelector("img").getAttribute("src");
            let newUrl = url.replace("i.imgur.com", "imgur.ihainan.me");
            let button = elem.querySelector(".PostContentMenu").querySelector("button");
            let new_button = button.cloneNode(true);
            button.parentNode.replaceChild(new_button, button);
            new_button.addEventListener("click", function() {
                let dummy = document.createElement("textarea");
                document.body.appendChild(dummy);
                dummy.value = newUrl;
                dummy.select();
                document.execCommand("copy");
                document.body.removeChild(dummy);
                alert(newUrl);
            });
        });
    }

    setInterval(replaceURL, 1000);
})();

javascript: (function() {
    let wrappers = document.getElementsByClassName('PostContent-imageWrapper');
    for (elem of wrappers) {
        let url = elem.querySelector(".PostContent-imageWrapper-rounded").querySelector("img").getAttribute("src");
        let newUrl = url.replace("i.imgur.com", "imgur.ihainan.me");
        let button = elem.querySelector(".PostContentMenu").querySelector("button");
        let new_button = button.cloneNode(true);
        button.parentNode.replaceChild(new_button, button);
        new_button.addEventListener("click", function() { 
            let dummy = document.createElement("textarea");
            document.body.appendChild(dummy);
            dummy.value = newUrl;
            dummy.select();
            document.execCommand("copy");
            document.body.removeChild(dummy);
            alert(newUrl);
        });
    }
})();

参考：