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update: Adding interference to CAPTCHA

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This commit is contained in:
EUForest 2026-03-18 12:45:09 +08:00
parent 06a2425474
commit bc721b0ba6
1 changed files with 16 additions and 5 deletions
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21
pkg/captcha/local.go
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@ -3,6 +3,7 @@ package captcha
import (
"context"
"fmt"
"strings"
"time"
"github.com/mojocn/base64Captcha"
@ -15,8 +16,18 @@ type localService struct {
}
func newLocalService(redisClient *redis.Client) Service {
// Configure captcha driver
driver := base64Captcha.NewDriverDigit(80, 240, 5, 0.7, 80)
// Configure captcha driver - alphanumeric with visual effects (letters + numbers)
driver := base64Captcha.NewDriverString(
80, // height
240, // width
20, // noise count (more interference)
base64Captcha.OptionShowSlimeLine|base64Captcha.OptionShowSineLine, // show curved lines
5, // length (5 characters)
"abcdefghijkmnpqrstuvwxyzABCDEFGHJKLMNPQRSTUVWXYZ23456789", // source (exclude confusing chars)
nil, // bg color (use default)
nil, // fonts (use default)
nil, // fonts storage (use default)
)
return &localService{
redis: redisClient,
driver: driver,
@ -61,8 +72,8 @@ func (s *localService) Verify(ctx context.Context, id string, code string, ip st
// Delete captcha after verification (one-time use)
s.redis.Del(ctx, key)
// Verify code
return answer == code, nil
// Verify code (case-insensitive)
return strings.EqualFold(answer, code), nil
}
func (s *localService) GetType() CaptchaType {
@ -94,5 +105,5 @@ func (r *redisStore) Get(id string, clear bool) string {
func (r *redisStore) Verify(id, answer string, clear bool) bool {
v := r.Get(id, clear)
return v == answer
return strings.EqualFold(v, answer)
}