feat: Add slider verification code

pkg/captcha/verify.go

@@ -0,0 +1,78 @@
+package captcha
+
+import (
+	"context"
+
+	"github.com/pkg/errors"
+	"github.com/redis/go-redis/v9"
+
+	"github.com/perfect-panel/server/pkg/xerr"
+)
+
+// VerifyInput holds the captcha fields from a login/register/reset request.
+type VerifyInput struct {
+	CaptchaId   string
+	CaptchaCode string
+	CfToken     string
+	SliderToken string
+	IP          string
+}
+
+// VerifyCaptcha validates the captcha according to captchaType.
+// Returns nil when captchaType is empty / unrecognised (i.e. captcha disabled).
+func VerifyCaptcha(
+	ctx context.Context,
+	redisClient *redis.Client,
+	captchaType string,
+	turnstileSecret string,
+	input VerifyInput,
+) error {
+	switch captchaType {
+	case string(CaptchaTypeLocal):
+		if input.CaptchaId == "" || input.CaptchaCode == "" {
+			return errors.Wrapf(xerr.NewErrCode(xerr.VerifyCodeError), "captcha required")
+		}
+		svc := NewService(Config{
+			Type:        CaptchaTypeLocal,
+			RedisClient: redisClient,
+		})
+		valid, err := svc.Verify(ctx, input.CaptchaId, input.CaptchaCode, input.IP)
+		if err != nil {
+			return errors.Wrapf(xerr.NewErrCode(xerr.VerifyCodeError), "verify captcha error")
+		}
+		if !valid {
+			return errors.Wrapf(xerr.NewErrCode(xerr.VerifyCodeError), "invalid captcha")
+		}
+
+	case string(CaptchaTypeTurnstile):
+		if input.CfToken == "" {
+			return errors.Wrapf(xerr.NewErrCode(xerr.VerifyCodeError), "captcha required")
+		}
+		svc := NewService(Config{
+			Type:            CaptchaTypeTurnstile,
+			TurnstileSecret: turnstileSecret,
+		})
+		valid, err := svc.Verify(ctx, input.CfToken, "", input.IP)
+		if err != nil {
+			return errors.Wrapf(xerr.NewErrCode(xerr.VerifyCodeError), "verify captcha error")
+		}
+		if !valid {
+			return errors.Wrapf(xerr.NewErrCode(xerr.VerifyCodeError), "invalid captcha")
+		}
+
+	case string(CaptchaTypeSlider):
+		if input.SliderToken == "" {
+			return errors.Wrapf(xerr.NewErrCode(xerr.VerifyCodeError), "slider captcha required")
+		}
+		sliderSvc := NewSliderService(redisClient)
+		valid, err := sliderSvc.VerifySliderToken(ctx, input.SliderToken)
+		if err != nil {
+			return errors.Wrapf(xerr.NewErrCode(xerr.VerifyCodeError), "verify captcha error")
+		}
+		if !valid {
+			return errors.Wrapf(xerr.NewErrCode(xerr.VerifyCodeError), "invalid slider captcha")
+		}
+	}
+
+	return nil
+}