80 lines
2.1 KiB
Go
80 lines
2.1 KiB
Go
package utils
|
|
|
|
import (
|
|
"errors"
|
|
"fmt"
|
|
"io"
|
|
"net/url"
|
|
|
|
"regexp"
|
|
"strings"
|
|
|
|
http "github.com/bogdanfinn/fhttp"
|
|
tlsclient "github.com/bogdanfinn/tls-client"
|
|
)
|
|
|
|
func ReCaptcha(anchorUrl string) (string, error) {
|
|
urlBase := "https://www.google.com/recaptcha/api2/"
|
|
|
|
matches := regexp.MustCompile(`/anchor\?(.*)`).FindStringSubmatch(anchorUrl)
|
|
if len(matches) < 2 {
|
|
return "", fmt.Errorf("no matches found in ANCHOR_URL")
|
|
}
|
|
params := matches[1]
|
|
|
|
client, err := tlsclient.NewHttpClient(tlsclient.NewNoopLogger())
|
|
if err != nil {
|
|
return "", err
|
|
}
|
|
req, err := http.NewRequest(http.MethodGet, anchorUrl, nil)
|
|
if err != nil {
|
|
return "", err
|
|
}
|
|
resp, err := client.Do(req)
|
|
if err != nil {
|
|
return "", err
|
|
}
|
|
defer resp.Body.Close()
|
|
|
|
if resp.StatusCode != 200 {
|
|
return "", errors.New("recaptcha status code is not 200")
|
|
}
|
|
body, err := io.ReadAll(resp.Body)
|
|
if err != nil {
|
|
return "", err
|
|
}
|
|
tokenMatches := regexp.MustCompile(`"recaptcha-token" value="(.*?)"`).FindStringSubmatch(string(body))
|
|
if len(tokenMatches) < 2 {
|
|
return "", errors.New("no token found in response")
|
|
}
|
|
token := tokenMatches[1]
|
|
paramsMap, err := url.ParseQuery(params)
|
|
if err != nil {
|
|
return "", err
|
|
}
|
|
paramsMap.Set("c", token)
|
|
paramsMap.Set("reason", "q")
|
|
reloadUrl := urlBase + "reload?k=" + paramsMap.Get("k")
|
|
postReq, err := http.NewRequest(http.MethodPost, reloadUrl, strings.NewReader(paramsMap.Encode()))
|
|
if err != nil {
|
|
return "", err
|
|
}
|
|
postReq.Header.Set("Content-Type", "application/x-www-form-urlencoded")
|
|
resp, err = client.Do(postReq)
|
|
if err != nil {
|
|
return "", err
|
|
}
|
|
defer resp.Body.Close()
|
|
body, err = io.ReadAll(resp.Body)
|
|
if err != nil {
|
|
return "", err
|
|
}
|
|
answerMatches := regexp.MustCompile(`"rresp","(.*?)"`).FindStringSubmatch(string(body))
|
|
if len(answerMatches) < 2 {
|
|
return "", fmt.Errorf("no answer found in reCaptcha response: %s", string(body))
|
|
}
|
|
return answerMatches[1], nil
|
|
}
|
|
|
|
//https://www.google.com/recaptcha/api2/anchor?ar=1&k=6Lf-ZrEUAAAAAEtmR70o2Rb9JM2QUBCH4j7EzIWX&co=aHR0cHM6Ly93d3cua2VlcGxpbmtzLm9yZzo0NDM.&hl=zh-CN&v=-80zvSY9h4i8O-ocN2P5qTJk&size=normal&cb=xm7hg2ftd5e2
|