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forgejo/modules/context/captcha.go
ByLCY 7baeb9c52a
Add new captcha: cloudflare turnstile (#22369)
Added a new captcha(cloudflare turnstile) and its corresponding
document. Cloudflare turnstile official instructions are here:
https://developers.cloudflare.com/turnstile

Signed-off-by: ByLCY <bylcy@bylcy.dev>
Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>
Co-authored-by: Jason Song <i@wolfogre.com>
2023-02-05 15:29:03 +08:00

93 lines
2.7 KiB
Go

// Copyright 2020 The Gitea Authors. All rights reserved.
// SPDX-License-Identifier: MIT
package context
import (
"fmt"
"sync"
"code.gitea.io/gitea/modules/base"
"code.gitea.io/gitea/modules/cache"
"code.gitea.io/gitea/modules/hcaptcha"
"code.gitea.io/gitea/modules/log"
"code.gitea.io/gitea/modules/mcaptcha"
"code.gitea.io/gitea/modules/recaptcha"
"code.gitea.io/gitea/modules/setting"
"code.gitea.io/gitea/modules/turnstile"
"gitea.com/go-chi/captcha"
)
var (
imageCaptchaOnce sync.Once
cpt *captcha.Captcha
)
// GetImageCaptcha returns global image captcha
func GetImageCaptcha() *captcha.Captcha {
imageCaptchaOnce.Do(func() {
cpt = captcha.NewCaptcha(captcha.Options{
SubURL: setting.AppSubURL,
})
cpt.Store = cache.GetCache()
})
return cpt
}
// SetCaptchaData sets common captcha data
func SetCaptchaData(ctx *Context) {
if !setting.Service.EnableCaptcha {
return
}
ctx.Data["EnableCaptcha"] = setting.Service.EnableCaptcha
ctx.Data["RecaptchaURL"] = setting.Service.RecaptchaURL
ctx.Data["Captcha"] = GetImageCaptcha()
ctx.Data["CaptchaType"] = setting.Service.CaptchaType
ctx.Data["RecaptchaSitekey"] = setting.Service.RecaptchaSitekey
ctx.Data["HcaptchaSitekey"] = setting.Service.HcaptchaSitekey
ctx.Data["McaptchaSitekey"] = setting.Service.McaptchaSitekey
ctx.Data["McaptchaURL"] = setting.Service.McaptchaURL
ctx.Data["CfTurnstileSitekey"] = setting.Service.CfTurnstileSitekey
}
const (
gRecaptchaResponseField = "g-recaptcha-response"
hCaptchaResponseField = "h-captcha-response"
mCaptchaResponseField = "m-captcha-response"
cfTurnstileResponseField = "cf-turnstile-response"
)
// VerifyCaptcha verifies Captcha data
// No-op if captchas are not enabled
func VerifyCaptcha(ctx *Context, tpl base.TplName, form interface{}) {
if !setting.Service.EnableCaptcha {
return
}
var valid bool
var err error
switch setting.Service.CaptchaType {
case setting.ImageCaptcha:
valid = GetImageCaptcha().VerifyReq(ctx.Req)
case setting.ReCaptcha:
valid, err = recaptcha.Verify(ctx, ctx.Req.Form.Get(gRecaptchaResponseField))
case setting.HCaptcha:
valid, err = hcaptcha.Verify(ctx, ctx.Req.Form.Get(hCaptchaResponseField))
case setting.MCaptcha:
valid, err = mcaptcha.Verify(ctx, ctx.Req.Form.Get(mCaptchaResponseField))
case setting.CfTurnstile:
valid, err = turnstile.Verify(ctx, ctx.Req.Form.Get(cfTurnstileResponseField))
default:
ctx.ServerError("Unknown Captcha Type", fmt.Errorf("Unknown Captcha Type: %s", setting.Service.CaptchaType))
return
}
if err != nil {
log.Debug("%v", err)
}
if !valid {
ctx.Data["Err_Captcha"] = true
ctx.RenderWithErr(ctx.Tr("form.captcha_incorrect"), tpl, form)
}
}