用openresty编写lua

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"""

#user  nobody;
worker_processes  1;

#error_log  logs/error.log;
#error_log  logs/error.log  notice;
error_log  logs/error.log  info;

#pid        logs/nginx.pid;


events {
    worker_connections  1024;
}


http {
    include       mime.types;
    default_type  application/octet-stream;

    #log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '
    #                  '$status $body_bytes_sent "$http_referer" '
    #                  '"$http_user_agent" "$http_x_forwarded_for"';

    #access_log  logs/access.log  main;

    sendfile        on;
    #tcp_nopush     on;

    #keepalive_timeout  0;
    keepalive_timeout  65;

    #gzip  on;

    server {
        listen       80;
        server_name  localhost;
        charset utf-8;  
        #charset koi8-r;

        #access_log  logs/host.access.log  main;

        #location / {
        #    root   html;
        #    index  index.html index.htm;
        #}
        location /one {
            default_type 'text/html';
            content_by_lua_block {
                local function encodeBase64(source_str)
                    local b64chars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/'
                    local s64 = ''
                    local str = source_str

                    while #str > 0 do
                        local bytes_num = 0
                        local buf = 0

                        for byte_cnt=1,3 do
                            buf = (buf * 256)
                            if #str > 0 then
                                buf = buf + string.byte(str, 1, 1)
                                str = string.sub(str, 2)
                                bytes_num = bytes_num + 1
                            end
                        end

                        for group_cnt=1,(bytes_num+1) do
                            local b64char = math.fmod(math.floor(buf/262144), 64) + 1
                            s64 = s64 .. string.sub(b64chars, b64char, b64char)
                            buf = buf * 64
                        end

                        for fill_cnt=1,(3-bytes_num) do
                            s64 = s64 .. '='
                        end
                    end

                    return s64
                end            
                local salt = "78t2cs5nim6fpy"
                local address = "www.7893015.com"
                local base = encodeBase64(address)
                local str1 = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"
                local str2 = "GsW8O7iy1FS02VEIbjwzmH3fZQUBq5T9hrl4CvgNnRMDupYAJokK+ecadtL/P6xX"
                ans = ""
                for i=1,#base do
                    local one = string.sub(base,i,i)
                    local num = string.find(str1,one)
                    two = string.sub(str2,num,num)
                    ans = ans..two
                end
                local timestamp = os.time()
                tmp = "d="..ans.."&t="..timestamp.."&v="..salt
                local rightsign = ngx.md5(tmp)
                local url = "/two?".."d="..ans.."&t="..timestamp.."&s="..rightsign
                html = string.format(
                [[
                <!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">
                <html><head>
                <meta http-equiv="refresh" content="61;url=http://www.baidu.com">
                <title></title>
                </head><body>
                <!--<h1>Service Temporarily Unavailable</h1>
                <p>The server is temporarily unable to service your
                request due to maintenance downtime or capacity
                problems. Please try again later.</p>-->
                <a href="" ></a>
                <script type="text/javascript">
                baidu.href = "%s" ;
                //IE
                if(document.all) {
                document.getElementById("baidu").click();
                }
                //Other Browser
                else {
                var e = document.createEvent("MouseEvents");
                e.initEvent("click", true, true);
                document.getElementById("baidu").dispatchEvent(e);
                }
                </script>
                </body></html>
                ]],url
                )
                ngx.say(html)
            }
        }

        location /two {
            default_type 'text/html';
            content_by_lua_block {
                local function decodeBase64(str64)
                    local b64chars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/'
                    local temp={}
                    for i=1,64 do
                        temp[string.sub(b64chars,i,i)] = i
                    end
                    temp['=']=0
                    local str=""
                    for i=1,#str64,4 do
                        if i>#str64 then
                            break
                        end
                        local data = 0
                        local str_count=0
                        for j=0,3 do
                            local str1=string.sub(str64,i+j,i+j)
                            if not temp[str1] then
                                return
                            end
                            if temp[str1] < 1 then
                                data = data * 64
                            else
                                data = data * 64 + temp[str1]-1
                                str_count = str_count + 1
                            end
                        end
                        for j=16,0,-8 do
                            if str_count > 0 then
                                str=str..string.char(math.floor(data/math.pow(2,j)))
                                data=math.fmod(data,math.pow(2,j))
                                str_count = str_count - 1
                            end
                        end
                    end
                    local last = tonumber(string.byte(str, string.len(str), string.len(str)))
                    if last == 0 then
                        str = string.sub(str, 1, string.len(str) - 1)
                    end
                    return str
                end
                local salt = "78t2cs5nim6fpy"
                local arg = ngx.req.get_uri_args()
                local address = arg["d"]
                local timestamp = arg["t"]
                local sign = arg["s"]            
                if address and timestamp and value then 
                    ngx.exit(403)
                end
                tmp = "d="..address.."&t="..timestamp.."&v="..salt
                local rightsign = ngx.md5(tmp)
                if sign ~= rightsign then
                    ngx.exit(403)
                end
                local time_out = 600
                local time_now = os.time()
                if tonumber(timestamp)+time_out<time_now then
                    ngx.exit(403)
                end
                local str1 = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"
                local str2 = "GsW8O7iy1FS02VEIbjwzmH3fZQUBq5T9hrl4CvgNnRMDupYAJokK+ecadtL/P6xX"
                ans = ""
                for i=1,#address do
                    local one = string.sub(address,i,i)
                    local num = string.find(str2,one)
                    two = string.sub(str1,num,num)
                    ans = ans..two
                end
                url = decodeBase64(ans)
                html = string.format(
                [[
                <!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">
                <html><head>
                <meta http-equiv="Content-Type" content="text/html; charset=gb2312">
                <meta http-equiv="Content-Language" content="zh-cn">
                <style>a:hover,a:visited{color:#337FFD;} </style>
                <title></title></head><body>    
                <p align="center"></p>
                <p align="center"><b><font style="font-size: 30pt">
                <script type="text/javascript">
                function checkurl(){
                window.location.href="https://%s";
                }
                </script>
                <br><br><br>
                <center>
                
                <a >浏览器安全检查通过，请点击进入</a>
                </center>
                </body></html>
                ]],url
                )
                ngx.say(html) 
            }
        }
        #error_page  404              /404.html;

        # redirect server error pages to the static page /50x.html
        #
        error_page   500 502 503 504  /50x.html;
        location = /50x.html {
            root   html;
        }

        # proxy the PHP scripts to Apache listening on 127.0.0.1:80
        #
        #location ~ \.php$ {
        #    proxy_pass   http://127.0.0.1;
        #}

        # pass the PHP scripts to FastCGI server listening on 127.0.0.1:9000
        #
        #location ~ \.php$ {
        #    root           html;
        #    fastcgi_pass   127.0.0.1:9000;
        #    fastcgi_index  index.php;
        #    fastcgi_param  SCRIPT_FILENAME  /scripts$fastcgi_script_name;
        #    include        fastcgi_params;
        #}

        # deny access to .htaccess files, if Apache's document root
        # concurs with nginx's one
        #
        #location ~ /\.ht {
        #    deny  all;
        #}
    }


    # another virtual host using mix of IP-, name-, and port-based configuration
    #
    #server {
    #    listen       8000;
    #    listen       somename:8080;
    #    server_name  somename  alias  another.alias;

    #    location / {
    #        root   html;
    #        index  index.html index.htm;
    #    }
    #}


    # HTTPS server
    #
    #server {
    #    listen       443 ssl;
    #    server_name  localhost;

    #    ssl_certificate      cert.pem;
    #    ssl_certificate_key  cert.key;

    #    ssl_session_cache    shared:SSL:1m;
    #    ssl_session_timeout  5m;

    #    ssl_ciphers  HIGH:!aNULL:!MD5;
    #    ssl_prefer_server_ciphers  on;

    #    location / {
    #        root   html;
    #        index  index.html index.htm;
    #    }
    #}

}
"""