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sogou.go
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package sogou
import (
"bytes"
"context"
"encoding/json"
"fmt"
"log"
"net/http"
"os"
"github.com/robertkrimen/otto"
"github.com/tidwall/gjson"
)
type Sogou struct{}
var (
instance = Sogou{}
cookiePath = os.ExpandEnv("$HOME/.config/sogou/cookies")
)
func Translate(ctx context.Context, req *Request) (resp *Response) {
return instance.Translate(ctx, *req)
}
func (s *Sogou) Translate(ctx context.Context, req Request) (resp *Response) {
resp = new(Response)
cookies, err := ReadCookiesFrom(cookiePath)
if err != nil {
if !os.IsNotExist(err) {
log.Printf("read cookies from %s err: %v", cookiePath, err)
}
r, _, err := sendRequest(ctx, http.MethodGet, "https://fanyi.sogou.com/", nil, func(r *http.Request) error {
r.Header.Set("User-Agent", UserAgent)
return nil
})
if err != nil {
resp.Err = fmt.Errorf("notReadResp error: %v", err)
return
}
cookies = r.Cookies()
if err := WriteCookiesTo(cookies, cookiePath); err != nil {
resp.Err = err
return
}
}
defer func() {
if resp.Err == nil {
return
}
if err := os.Remove(cookiePath); err != nil {
resp.Err = fmt.Errorf("remove cookies %s error: %v", cookiePath, err)
}
}()
req.ToLang = s.convertLanguage(req.ToLang)
sign, err := s.calSign("auto", req.ToLang, req.Text)
if err != nil {
resp.Err = fmt.Errorf("calSign error: %v", err)
return
}
param := map[string]interface{}{
"client": "pc",
"exchange": false,
"fr": "browser_pc",
"from": "auto",
"needQc": 1,
"s": sign,
"text": req.Text,
"to": req.ToLang,
}
urlStr := "https://fanyi.sogou.com/api/transpc/text/result"
reqData, _ := json.Marshal(param)
body := bytes.NewReader(reqData)
_, data, err := sendRequest(ctx, http.MethodPost, urlStr, body, func(req *http.Request) error {
addCookies(req, cookies)
req.Header.Set("Content-Type", "application/json")
req.Header.Set("User-Agent", UserAgent)
return nil
})
if err != nil {
resp.Err = fmt.Errorf("readResp error: %v", err)
return
}
jr := gjson.Parse(string(data))
dit := jr.Get("data.translate.dit").String()
if dit == "" {
resp.Err = fmt.Errorf("cannot get translate result")
} else {
resp.Result = dit
}
return
}
func (s *Sogou) convertLanguage(language string) string {
l := language
switch language {
case Chinese:
l = "zh-CHS"
}
return l
}
func (*Sogou) calSign(from, to, text string) (string, error) {
vm := otto.New()
if err := vm.Set("query", from+to+text+"109984457"); err != nil {
return "", fmt.Errorf("vm.Set query error: %v", err)
}
value, err := vm.Run(signJS)
if err != nil {
return "", fmt.Errorf("vm.Run error: %v", err)
}
result, err := value.ToString()
if err != nil {
return "", fmt.Errorf("vlue.ToString error: %v", err)
}
return result, nil
}
const signJS = `
var n150 = {
"rotl": function(t, e) {
return t << e | t >>> 32 - e
},
"rotr": function(t, e) {
return t << 32 - e | t >>> e
},
"endian": function(t) {
if (t.constructor == Number)
return 16711935 & n150.rotl(t, 8) | 4278255360 & n150.rotl(t, 24);
for (var e = 0; e < t.length; e++)
t[e] = n150.endian(t[e]);
return t
},
"randomBytes": function(t) {
for (var e = []; t > 0; t--)
e.push(Math.floor(256 * Math.random()));
return e
},
"bytesToWords": function(t) {
for (var e = [], n = 0, r = 0; n < t.length; n++,
r += 8)
e[r >>> 5] |= t[n] << 24 - r % 32;
return e
},
"wordsToBytes": function(t) {
for (var e = [], n = 0; n < 32 * t.length; n += 8)
e.push(t[n >>> 5] >>> 24 - n % 32 & 255);
return e
},
"bytesToHex": function(t) {
for (var e = [], n = 0; n < t.length; n++)
e.push((t[n] >>> 4).toString(16)),
e.push((15 & t[n]).toString(16));
return e.join("")
},
"hexToBytes": function(t) {
for (var e = [], n = 0; n < t.length; n += 2)
e.push(parseInt(t.substr(n, 2), 16));
return e
},
"bytesToBase64": function(t) {
for (var n = [], r = 0; r < t.length; r += 3)
for (var o = t[r] << 16 | t[r + 1] << 8 | t[r + 2], i = 0; i < 4; i++)
8 * r + 6 * i <= 8 * t.length ? n.push(e.charAt(o >>> 6 * (3 - i) & 63)) : n.push("=");
return n.join("")
},
"base64ToBytes": function(t) {
t = t.replace(/[^A-Z0-9+\/]/gi, "");
for (var n = [], r = 0, o = 0; r < t.length; o = ++r % 4)
0 != o && n.push((e.indexOf(t.charAt(r - 1)) & Math.pow(2, -2 * o + 8) - 1) << 2 * o | e.indexOf(t.charAt(r)) >>> 6 - 2 * o);
return n
}
};
var n128 = {
"utf8": {
"stringToBytes": function(t) {
return n128.bin.stringToBytes(unescape(encodeURIComponent(t)))
},
"bytesToString": function(t) {
return decodeURIComponent(escape(n128.bin.bytesToString(t)))
}
},
"bin": {
"stringToBytes": function(t) {
for (var e = [], n = 0; n < t.length; n++)
e.push(255 & t.charCodeAt(n));
return e
},
"bytesToString": function(t) {
for (var e = [], n = 0; n < t.length; n++)
e.push(String.fromCharCode(t[n]));
return e.join("")
}
}
};
function a(t, n) {
var r = n128.utf8;
var i = n128.bin;
var e = n150;
t.constructor == String ? t = n && "binary" === n.encoding ? i.stringToBytes(t) : r.stringToBytes(t) : o(t) ? t = Array.prototype.slice.call(t, 0) : Array.isArray(t) || (t = t.toString());
for (var c = e.bytesToWords(t), u = 8 * t.length, s = 1732584193, l = -271733879, f = -1732584194, p = 271733878, h = 0; h < c.length; h++)
c[h] = 16711935 & (c[h] << 8 | c[h] >>> 24) | 4278255360 & (c[h] << 24 | c[h] >>> 8);
c[u >>> 5] |= 128 << u % 32,
c[14 + (u + 64 >>> 9 << 4)] = u;
for (var d = aff, y = agg, v = ahh, g = aii, h = 0; h < c.length; h += 16) {
var b = s,
m = l,
w = f,
T = p;
s = d(s, l, f, p, c[h + 0], 7, -680876936),
p = d(p, s, l, f, c[h + 1], 12, -389564586),
f = d(f, p, s, l, c[h + 2], 17, 606105819),
l = d(l, f, p, s, c[h + 3], 22, -1044525330),
s = d(s, l, f, p, c[h + 4], 7, -176418897),
p = d(p, s, l, f, c[h + 5], 12, 1200080426),
f = d(f, p, s, l, c[h + 6], 17, -1473231341),
l = d(l, f, p, s, c[h + 7], 22, -45705983),
s = d(s, l, f, p, c[h + 8], 7, 1770035416),
p = d(p, s, l, f, c[h + 9], 12, -1958414417),
f = d(f, p, s, l, c[h + 10], 17, -42063),
l = d(l, f, p, s, c[h + 11], 22, -1990404162),
s = d(s, l, f, p, c[h + 12], 7, 1804603682),
p = d(p, s, l, f, c[h + 13], 12, -40341101),
f = d(f, p, s, l, c[h + 14], 17, -1502002290),
l = d(l, f, p, s, c[h + 15], 22, 1236535329),
s = y(s, l, f, p, c[h + 1], 5, -165796510),
p = y(p, s, l, f, c[h + 6], 9, -1069501632),
f = y(f, p, s, l, c[h + 11], 14, 643717713),
l = y(l, f, p, s, c[h + 0], 20, -373897302),
s = y(s, l, f, p, c[h + 5], 5, -701558691),
p = y(p, s, l, f, c[h + 10], 9, 38016083),
f = y(f, p, s, l, c[h + 15], 14, -660478335),
l = y(l, f, p, s, c[h + 4], 20, -405537848),
s = y(s, l, f, p, c[h + 9], 5, 568446438),
p = y(p, s, l, f, c[h + 14], 9, -1019803690),
f = y(f, p, s, l, c[h + 3], 14, -187363961),
l = y(l, f, p, s, c[h + 8], 20, 1163531501),
s = y(s, l, f, p, c[h + 13], 5, -1444681467),
p = y(p, s, l, f, c[h + 2], 9, -51403784),
f = y(f, p, s, l, c[h + 7], 14, 1735328473),
l = y(l, f, p, s, c[h + 12], 20, -1926607734),
s = v(s, l, f, p, c[h + 5], 4, -378558),
p = v(p, s, l, f, c[h + 8], 11, -2022574463),
f = v(f, p, s, l, c[h + 11], 16, 1839030562),
l = v(l, f, p, s, c[h + 14], 23, -35309556),
s = v(s, l, f, p, c[h + 1], 4, -1530992060),
p = v(p, s, l, f, c[h + 4], 11, 1272893353),
f = v(f, p, s, l, c[h + 7], 16, -155497632),
l = v(l, f, p, s, c[h + 10], 23, -1094730640),
s = v(s, l, f, p, c[h + 13], 4, 681279174),
p = v(p, s, l, f, c[h + 0], 11, -358537222),
f = v(f, p, s, l, c[h + 3], 16, -722521979),
l = v(l, f, p, s, c[h + 6], 23, 76029189),
s = v(s, l, f, p, c[h + 9], 4, -640364487),
p = v(p, s, l, f, c[h + 12], 11, -421815835),
f = v(f, p, s, l, c[h + 15], 16, 530742520),
l = v(l, f, p, s, c[h + 2], 23, -995338651),
s = g(s, l, f, p, c[h + 0], 6, -198630844),
p = g(p, s, l, f, c[h + 7], 10, 1126891415),
f = g(f, p, s, l, c[h + 14], 15, -1416354905),
l = g(l, f, p, s, c[h + 5], 21, -57434055),
s = g(s, l, f, p, c[h + 12], 6, 1700485571),
p = g(p, s, l, f, c[h + 3], 10, -1894986606),
f = g(f, p, s, l, c[h + 10], 15, -1051523),
l = g(l, f, p, s, c[h + 1], 21, -2054922799),
s = g(s, l, f, p, c[h + 8], 6, 1873313359),
p = g(p, s, l, f, c[h + 15], 10, -30611744),
f = g(f, p, s, l, c[h + 6], 15, -1560198380),
l = g(l, f, p, s, c[h + 13], 21, 1309151649),
s = g(s, l, f, p, c[h + 4], 6, -145523070),
p = g(p, s, l, f, c[h + 11], 10, -1120210379),
f = g(f, p, s, l, c[h + 2], 15, 718787259),
l = g(l, f, p, s, c[h + 9], 21, -343485551),
s = s + b >>> 0,
l = l + m >>> 0,
f = f + w >>> 0,
p = p + T >>> 0
}
return e.endian([s, l, f, p])
};
function aff(t, e, n, r, o, i, a) {
var c = t + (e & n | ~e & r) + (o >>> 0) + a;
return (c << i | c >>> 32 - i) + e
}
function agg(t, e, n, r, o, i, a) {
var c = t + (e & r | n & ~r) + (o >>> 0) + a;
return (c << i | c >>> 32 - i) + e
}
function ahh(t, e, n, r, o, i, a) {
var c = t + (e ^ n ^ r) + (o >>> 0) + a;
return (c << i | c >>> 32 - i) + e
}
function aii(t, e, n, r, o, i, a) {
var c = t + (n ^ (e | ~r)) + (o >>> 0) + a;
return (c << i | c >>> 32 - i) + e
}
function sign(t, n) {
var e = n150;
if (void 0 === t || null === t)
throw new Error("Illegal argument " + t);
var r = n150.wordsToBytes(a(t, n));
return n && n.asBytes ? r : n && n.asString ? i.bytesToString(r) : e.bytesToHex(r)
}
result = sign(query);
`