49 lignes
1013 B
Go
49 lignes
1013 B
Go
package captcha
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import (
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"errors"
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"net/http"
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"time"
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"github.com/dchest/captcha"
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)
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const lifetime = time.Minute * 20
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var (
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server = captcha.Server(captcha.StdWidth, captcha.StdHeight)
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ErrInvalidCaptcha = errors.New("invalid captcha")
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)
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func init() {
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captcha.SetCustomStore(captcha.NewMemoryStore(1<<10, lifetime))
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}
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// Captcha is to be embedded into any form struct requiring a Captcha
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type Captcha struct {
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CaptchaID, Solution string
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}
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// GetID returns a new Captcha ID
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func GetID() string {
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return captcha.New()
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}
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// Extract a Captcha struct from an HTML form
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func Extract(r *http.Request) Captcha {
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return Captcha{
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CaptchaID: r.FormValue("captchaID"),
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Solution: r.FormValue("solution"),
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}
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}
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// ServeFiles serves Captcha images and audio
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func ServeFiles(w http.ResponseWriter, r *http.Request) {
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server.ServeHTTP(w, r)
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}
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// Authenticate check's if a Captcha solution is valid
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func Authenticate(req Captcha) bool {
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return captcha.VerifyString(req.CaptchaID, req.Solution)
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}
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