/
recaptcha.go
58 lines (48 loc) · 1.28 KB
/
recaptcha.go
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package amigo
import (
"encoding/json"
"io/ioutil"
"net/http"
"net/url"
"time"
)
const captchaVerifyAPI = "https://www.google.com/recaptcha/api/siteverify"
type Recaptcha struct {
secret string
lastError []string
}
// Struct for parsing json in google's response
type googleResponse struct {
Success bool
ErrorCodes []string `json:"error-codes"`
}
func NewRecaptcha(secret string) Recaptcha {
return Recaptcha{secret: secret}
}
// Verifies if current request have valid re-captcha response and returns true or false
// This method also records any errors in validation.
func (r *Recaptcha) Verify(response string) bool {
r.lastError = make([]string, 1)
client := &http.Client{Timeout: 20 * time.Second}
resp, err := client.PostForm(captchaVerifyAPI, url.Values{"secret": {r.secret}, "response": {response}})
if err != nil {
r.lastError = append(r.lastError, err.Error())
return false
}
defer resp.Body.Close()
body, err := ioutil.ReadAll(resp.Body)
if err != nil {
r.lastError = append(r.lastError, err.Error())
return false
}
gr := new(googleResponse)
err = json.Unmarshal(body, gr)
if err != nil {
r.lastError = append(r.lastError, err.Error())
return false
}
if !gr.Success {
r.lastError = append(r.lastError, gr.ErrorCodes...)
}
return gr.Success
}