From 68d191cdbb961684c2e4fd7aa224286e8c134b3b Mon Sep 17 00:00:00 2001 From: Wendell Sun Date: Wed, 9 Jun 2021 22:33:28 +0800 Subject: [PATCH] Fix google translator --- google.go | 133 ++++++------------------------------------------------ 1 file changed, 14 insertions(+), 119 deletions(-) diff --git a/google.go b/google.go index e713363..fe06d3b 100644 --- a/google.go +++ b/google.go @@ -6,9 +6,7 @@ import ( "net/http" "net/url" "regexp" - - "github.com/robertkrimen/otto" - "github.com/tidwall/gjson" + "strings" ) type googleTranslator struct{} @@ -25,132 +23,29 @@ func GoogleTranslate(ctx context.Context, req Request) *Response { func (g *googleTranslator) translate(ctx context.Context, req Request) (resp *Response) { resp = newResp(g) - _, data, err := sendRequest(ctx, http.MethodGet, "https://translate.google.cn", nil, nil) - if err != nil { - resp.Err = fmt.Errorf("readResp error: %v", err) - return + reqStr := fmt.Sprintf(`[[["MkEWBc","[[\"%s\",\"%s\",\"%s\",true],[null]]",null,"generic"]]]`, req.Text, "auto", req.ToLang) + param := url.Values{ + "f.req": {reqStr}, } - vq, err := g.getVq(string(data)) - if err != nil { - resp.Err = fmt.Errorf("getVq error: %v", err) - return - } - tk, err := g.calTK(vq, req.Text) - if err != nil { - resp.Err = fmt.Errorf("calTK error: %v", err) - return - } - - u, _ := url.Parse("https://translate.google.cn/translate_a/single") - param := u.Query() - param.Set("client", "t") - param.Set("sl", "auto") - param.Set("hl", "zh-CN") - param.Set("tl", req.ToLang) - param.Set("dt", "t") - param.Set("ie", "UTF-8") - param.Set("oe", "UTF-8") - param.Set("source", "btn") - param.Set("ssel", "3") - param.Set("tsel", "3") - param.Set("kc", "0") - param.Set("tk", tk) - param.Set("q", req.Text) - u.RawQuery = param.Encode() + body := strings.NewReader(param.Encode()) - _, data, err = sendRequest(ctx, "GET", u.String(), nil, func(r *http.Request) error { - r.Header.Set("User-Agent", "Paw/3.1.5 (Macintosh; OS X/10.13.2) GCDHTTPRequest") + _, data, err := sendRequest(ctx, "POST", "https://translate.google.cn/_/TranslateWebserverUi/data/batchexecute", body, func(r *http.Request) error { + r.Header.Set("user-agent", UserAgent) + r.Header.Set("content-type", "application/x-www-form-urlencoded;charset=UTF-8") return nil }) if err != nil { resp.Err = fmt.Errorf("sendRequest error: %v", err) return } - - jr := gjson.Parse(string(data)) - if !jr.Get("..0.0.0").Exists() { - resp.Err = fmt.Errorf("cannot get google translate result") - return - } - jsonResult := jr.Get("..0.0").Array() - for _, r := range jsonResult { - resp.Result += r.Get("..0.0").String() - } - + resp.Result, resp.Err = g.getResult(string(data)) return } -const ( - googleSignJS = ` - var Tq = function(a) { - return function() { - return a - } - }, - Uq = function(a, b) { - for (var c = 0; c < b.length - 2; c += 3) { - var d = b.charAt(c + 2); - d = "a" <= d ? d.charCodeAt(0) - 87 : Number(d); - d = "+" == b.charAt(c + 1) ? a >>> d : a << d; - a = "+" == b.charAt(c) ? a + d & 4294967295 : a ^ d - } - return a - }, - Wq = function(a) { - var b = Vq; - var d = Tq(String.fromCharCode(116)); - c = Tq(String.fromCharCode(107)); - d = [d(), d()]; - d[1] = c(); - d = b.split("."); - b = Number(d[0]) || 0; - for (var e = [], f = 0, g = 0; g < a.length; g++) { - var l = a.charCodeAt(g); - 128 > l ? e[f++] = l : (2048 > l ? e[f++] = l >> 6 | 192 : (55296 == (l & 64512) && g + 1 < a.length && 56320 == (a.charCodeAt(g + 1) & 64512) ? (l = 65536 + ((l & 1023) << 10) + (a.charCodeAt(++g) & 1023), - e[f++] = l >> 18 | 240, - e[f++] = l >> 12 & 63 | 128) : e[f++] = l >> 12 | 224, - e[f++] = l >> 6 & 63 | 128), - e[f++] = l & 63 | 128) - } - a = b; - for (f = 0; f < e.length; f++) - a += e[f], - a = Uq(a, "+-a^+6"); - a = Uq(a, "+-3^+b+-f"); - a ^= Number(d[1]) || 0; - 0 > a && (a = (a & 2147483647) + 2147483648); - a %= 1E6; - return a.toString() + "." + (a ^ b) - }; - result = Wq(query) - ` -) - -func (*googleTranslator) calTK(vq, query string) (string, error) { - vm := otto.New() - if err := vm.Set("Vq", vq); err != nil { - return "", fmt.Errorf("vm.Set Vq error: %v", err) - } - if err := vm.Set("query", query); err != nil { - return "", fmt.Errorf("vm.Set query error: %v", err) - } - value, err := vm.Run(googleSignJS) - if err != nil { - return "", fmt.Errorf("vm.Run error: %v", err) - } - return value.String(), nil -} - -func (*googleTranslator) getVq(dataStr string) (string, error) { - //dataStr = `LOW_CONFIDENCE_THRESHOLD=-1;MAX_ALTERNATIVES_ROUNDTRIP_RESULTS=1;TKK=eval('((function(){var a\x3d1966732470;var b\x3d1714107181;return 423123+\x27.\x27+(a+b)})())');VERSION_LABEL = 'twsfe_w_20180402_RC00';` - vqResult := regexp.MustCompile(`tkk:'(?P[\s\S]+)',experiment_ids`).FindStringSubmatch(dataStr) - if len(vqResult) != 2 { - return "", fmt.Errorf("cannot get vq") - } - vm := otto.New() - value, err := vm.Run(vqResult[1]) - if err != nil { - return "", fmt.Errorf("vm.Run error: %v", err) +func (g *googleTranslator) getResult(dataStr string) (string, error) { + result := regexp.MustCompile(`(?U),null,null,null,\[\[\\"(?P\S+)\\",\[\\"`).FindStringSubmatch(dataStr) + if len(result) != 2 { + return "", fmt.Errorf("cannot get result") } - return value.String(), nil + return result[1], nil }