使用EJS脚本实现花生壳动态域名更新服务(一)

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原文出处:http://ily.so/FrQBne

花生壳提供了动态域名服务,动态域名可实现几乎实时生效的DNS解析服务,并且花生壳还提供了webapi更新域名解析的服务。

通过EJS我们可以轻松调用花生壳提供的webapi服务实现动态域名更新功能。

注意:这个webapi是采用Http Basic Authentication(HTTP基本认证)的,因此账号和密码必须用BASE64(account:password)编码后放在请求头。具体实现请参考下面代码,Base64编码部分代码copy自互联网,版权由原作者所有。

代码如下:

 

clear()

/**

* UTF16和UTF8转换对照表

* U+00000000 – U+0000007F   0xxxxxxx

* U+00000080 – U+000007FF   110xxxxx 10xxxxxx

* U+00000800 – U+0000FFFF   1110xxxx 10xxxxxx 10xxxxxx

* U+00010000 – U+001FFFFF   11110xxx 10xxxxxx 10xxxxxx 10xxxxxx

* U+00200000 – U+03FFFFFF   111110xx 10xxxxxx 10xxxxxx 10xxxxxx 10xxxxxx

* U+04000000 – U+7FFFFFFF   1111110x 10xxxxxx 10xxxxxx 10xxxxxx 10xxxxxx 10xxxxxx

*/

var Base64 = {

    // 转码表

    table : [

            'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H',

            'I', 'J', 'K', 'L', 'M', 'N', 'O' ,'P',

            'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X',

            'Y', 'Z', 'a', 'b', 'c', 'd', 'e', 'f',

            'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n',

            'o', 'p', 'q', 'r', 's', 't', 'u', 'v',

            'w', 'x', 'y', 'z', '0', '1', '2', '3',

            '4', '5', '6', '7', '8', '9', '+', '/'

    ],

    UTF16ToUTF8 : function(str) {

        var res = [], len = str.length;

        for (var i = 0; i < len; i++) {

            var code = str.charCodeAt(i);

            if (code > 0x0000 && code <= 0x007F) {

                // 单字节,这里并不考虑0x0000,因为它是空字节

                // U+00000000 – U+0000007F  0xxxxxxx

                res.push(str.charAt(i));

            } else if (code >= 0x0080 && code <= 0x07FF) {

                // 双字节

                // U+00000080 – U+000007FF  110xxxxx 10xxxxxx

                // 110xxxxx

                var byte1 = 0xC0 | ((code >> 6) & 0x1F);

                // 10xxxxxx

                var byte2 = 0x80 | (code & 0x3F);

                res.push(

                    String.fromCharCode(byte1), 

                    String.fromCharCode(byte2)

                );

            } else if (code >= 0x0800 && code <= 0xFFFF) {

                // 三字节

                // U+00000800 – U+0000FFFF  1110xxxx 10xxxxxx 10xxxxxx

                // 1110xxxx

                var byte1 = 0xE0 | ((code >> 12) & 0x0F);

                // 10xxxxxx

                var byte2 = 0x80 | ((code >> 6) & 0x3F);

                // 10xxxxxx

                var byte3 = 0x80 | (code & 0x3F);

                res.push(

                    String.fromCharCode(byte1), 

                    String.fromCharCode(byte2), 

                    String.fromCharCode(byte3)

                );

            } else if (code >= 0x00010000 && code <= 0x001FFFFF) {

                // 四字节

                // U+00010000 – U+001FFFFF  11110xxx 10xxxxxx 10xxxxxx 10xxxxxx

            } else if (code >= 0x00200000 && code <= 0x03FFFFFF) {

                // 五字节

                // U+00200000 – U+03FFFFFF  111110xx 10xxxxxx 10xxxxxx 10xxxxxx 10xxxxxx

            } else /** if (code >= 0x04000000 && code <= 0x7FFFFFFF)*/ {

                // 六字节

                // U+04000000 – U+7FFFFFFF  1111110x 10xxxxxx 10xxxxxx 10xxxxxx 10xxxxxx 10xxxxxx

            }

        }

  

        return res.join('');

    },

    UTF8ToUTF16 : function(str) {

        var res = [], len = str.length;

        var i = 0;

        for (var i = 0; i < len; i++) {

            var code = str.charCodeAt(i);

            // 对第一个字节进行判断

            if (((code >> 7) & 0xFF) == 0x0) {

                // 单字节

                // 0xxxxxxx

                res.push(str.charAt(i));

            } else if (((code >> 5) & 0xFF) == 0x6) {

                // 双字节

                // 110xxxxx 10xxxxxx

                var code2 = str.charCodeAt(++i);

                var byte1 = (code & 0x1F) << 6;

                var byte2 = code2 & 0x3F;

                var utf16 = byte1 | byte2;

                res.push(Sting.fromCharCode(utf16));

            } else if (((code >> 4) & 0xFF) == 0xE) {

                // 三字节

                // 1110xxxx 10xxxxxx 10xxxxxx

                var code2 = str.charCodeAt(++i);

                var code3 = str.charCodeAt(++i);

                var byte1 = (code << 4) | ((code2 >> 2) & 0x0F);

                var byte2 = ((code2 & 0x03) << 6) | (code3 & 0x3F);

                var utf16 = ((byte1 & 0x00FF) << 8) | byte2

                res.push(String.fromCharCode(utf16));

            } else if (((code >> 3) & 0xFF) == 0x1E) {

                // 四字节

                // 11110xxx 10xxxxxx 10xxxxxx 10xxxxxx

            } else if (((code >> 2) & 0xFF) == 0x3E) {

                // 五字节

                // 111110xx 10xxxxxx 10xxxxxx 10xxxxxx 10xxxxxx

            } else /** if (((code >> 1) & 0xFF) == 0x7E)*/ {

                // 六字节

                // 1111110x 10xxxxxx 10xxxxxx 10xxxxxx 10xxxxxx 10xxxxxx

            }

        }

  

        return res.join('');

    },

    encode : function(str) {

        if (!str) {

            return '';

        }

        var utf8    = this.UTF16ToUTF8(str); // 转成UTF8

        var i = 0; // 遍历索引

        var len = utf8.length;

        var res = [];

        while (i < len) {

            var c1 = utf8.charCodeAt(i++) & 0xFF;

            res.push(this.table[c1 >> 2]);

            // 需要补2个=

            if (i == len) {

                res.push(this.table[(c1 & 0x3) << 4]);

                res.push('==');

                break;

            }

            var c2 = utf8.charCodeAt(i++);

            // 需要补1个=

            if (i == len) {

                res.push(this.table[((c1 & 0x3) << 4) | ((c2 >> 4) & 0x0F)]);

                res.push(this.table[(c2 & 0x0F) << 2]);

                res.push('=');

                break;

            }

            var c3 = utf8.charCodeAt(i++);

            res.push(this.table[((c1 & 0x3) << 4) | ((c2 >> 4) & 0x0F)]);

            res.push(this.table[((c2 & 0x0F) << 2) | ((c3 & 0xC0) >> 6)]);

            res.push(this.table[c3 & 0x3F]);

        }

  

        return res.join('');

    },

    decode : function(str) {

        if (!str) {

            return '';

        }

  

        var len = str.length;

        var i   = 0;

        var res = [];

  

        while (i < len) {

            code1 = this.table.indexOf(str.charAt(i++));

            code2 = this.table.indexOf(str.charAt(i++));

            code3 = this.table.indexOf(str.charAt(i++));

            code4 = this.table.indexOf(str.charAt(i++));

  

            c1 = (code1 << 2) | (code2 >> 4);

            c2 = ((code2 & 0xF) << 4) | (code3 >> 2);

            c3 = ((code3 & 0x3) << 6) | code4;

  

            res.push(String.fromCharCode(c1));

  

            if (code3 != 64) {

                res.push(String.fromCharCode(c2));

            }

            if (code4 != 64) {

                res.push(String.fromCharCode(c3));

            }

  

        }

  

        return this.UTF8ToUTF16(res.join(''));

    }

};

/*

    good    更新成功,域名的IP地址已经更新,同时会返回本次更新成功的IP,用空格隔开,如:good 1.2.3.4

    nochg   更新成功,但没有改变IP。一般这种情况为本次提交的IP跟上一次的一样

    notfqdn 未有激活花生壳的域名

    nohost  域名不存在或未激活花生壳

    nochg   更新成功,但没有改变IP。一般这种情况为本次提交的IP跟上一次的一样

    abuse   请求失败,频繁请求或验证失败时会出现

    !donator    表示此功能需要付费用户才能使用,如https

    911 系统错误

*/

var hostname = prompt("请输入要更新的动态域名:");

var user = prompt("请输入账号:");

var pwd = prompt("请输入密码:");

var result = http.get("http://ddns.oray.com/ph/update?hostname=" + hostname, "User-Agent:Oray\nAuthorization:Basic " + Base64.encode(user + ":" + pwd), "utf-8");

console.log(result);

将代码复制到R5以上版本的IDE工具可运行。

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