谷歌翻译接口 破解

前面介绍了有道翻译接口 破解，接下来试一试谷歌翻译（Github项目地址）
同样，查看首页元素，如下：

得到 Request URL 和 Request Method。
然后查看 From Data，可以看到一系列的参数，不过我们重点只需要关注 tk。

按照推断，tk 参数值也是一种签名，通过某种方法得到。我们从众多的 js 代码中可以发现一些端倪。

通过格式化 js 代码，得到

实际上，已经有大佬将计算 tk 代码破解了，这里我就直接放上来：

function token(a) { 
    var k = ""; 
    var b = 406644; 
    var b1 = 3293161072; 

    var jd = "."; 
    var sb = "+-a^+6"; 
    var Zb = "+-3^+b+-f"; 

    for (var e = [], f = 0, g = 0; g < a.length; g++) { 
        var m = a.charCodeAt(g); 
        128 > m ? e[f++] = m : (2048 > m ? e[f++] = m >> 6 | 192 : (55296 == (m & 64512) && g + 1 < a.length && 56320 == (a.charCodeAt(g + 1) & 64512) ? (m = 65536 + ((m & 1023) << 10) + (a.charCodeAt(++g) & 1023), 
        e[f++] = m >> 18 | 240, 
        e[f++] = m >> 12 & 63 | 128) : e[f++] = m >> 12 | 224, 
        e[f++] = m >> 6 & 63 | 128), 
        e[f++] = m & 63 | 128) 
    } 
    a = b; 
    for (f = 0; f < e.length; f++)
        a += e[f], 
        a = RL(a, sb); 
    a = RL(a, Zb); 
    a ^= b1 || 0; 
    0 > a && (a = (a & 2147483647) + 2147483648); 
    a %= 1E6; 
    return a.toString() + jd + (a ^ b) 
}; 

function RL(a, b) { 
    var t = "a"; 
    var Yb = "+"; 
    for (var c = 0; c < b.length - 2; c += 3) { 
        var d = b.charAt(c + 2), 
        d = d >= t ? d.charCodeAt(0) - 87 : Number(d), 
        d = b.charAt(c + 1) == Yb ? a >>> d: a << d; 
        a = b.charAt(c) == Yb ? a + d & 4294967295 : a ^ d 
    } 
    return a 
} 

tk 都得到了，剩下的按部就班的就 OK 啦，JAVA 代码如下：

public class Google {
    public static void main(String[] args) throws Exception {
        String from = "zh-CN";
        String to = "en";
        String q = "我是谁，我在哪儿？";
        String url = "http://translate.google.cn/translate_a/single";

        String tk = token(q);
        Map params = new HashMap();
        params.put("client", "t");
        params.put("sl", from);
        params.put("tl", to);
        params.put("hl", "zh-CN");
        params.put("dt", "at");
        params.put("dt", "bd");
        params.put("dt", "ex");
        params.put("dt", "ld");
        params.put("dt", "md");
        params.put("dt", "qca");
        params.put("dt", "rw");
        params.put("dt", "rm");
        params.put("dt", "ss");
        params.put("dt", "t");
        params.put("ie", "UTF-8");
        params.put("oe", "UTF-8");
        params.put("source", "btn");
        params.put("ssel", "0");
        params.put("tsel", "0");
        params.put("kc", "0");
        params.put("tk", tk);
        params.put("q", q);

        CloseableHttpClient httpClient = HttpClients.createDefault();

        URIBuilder uri = new URIBuilder(url);
        for (String key : params.keySet()) {
            String value = params.get(key);
            uri.addParameter(key, value);
        }
        HttpUriRequest request = new HttpGet(uri.toString());
        CloseableHttpResponse response = httpClient.execute(request);
        HttpEntity entity = response.getEntity();

        String result = EntityUtils.toString(entity, "utf-8");

        System.out.println(result);

        EntityUtils.consume(entity);
        response.getEntity().getContent().close();
        response.close();
    }

    private static String token(String value) {
        String result = "";
        ScriptEngine engine = new ScriptEngineManager().getEngineByName("js");
        try {
            FileReader reader = new FileReader("Google.js");
            engine.eval(reader);

            if (engine instanceof Invocable) {
                Invocable invoke = (Invocable)engine;
                result = String.valueOf(invoke.invokeFunction("token", value));
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
        return result;
    }
}