98 lines
2.2 KiB
Go
98 lines
2.2 KiB
Go
package captcha
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import (
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"fmt"
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"git.bvbej.com/bvbej/base-golang/pkg/cache"
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"github.com/mojocn/base64Captcha"
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"go.uber.org/zap"
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"strings"
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"time"
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)
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var _ base64Captcha.Store = (*store)(nil)
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type store struct {
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cache cache.Repo
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ttl time.Duration
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logger *zap.Logger
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ns string
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prefix string
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}
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func (s *store) Set(id string, value string) error {
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err := s.cache.Set(fmt.Sprintf("%s%s%s", s.ns, s.prefix, id), value, s.ttl)
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if err != nil {
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return err
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}
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return nil
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}
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func (s *store) Get(id string, clear bool) string {
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value, err := s.cache.Get(fmt.Sprintf("%s%s%s", s.ns, s.prefix, id))
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if err == nil && clear {
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s.cache.Del(fmt.Sprintf("%s%s%s", s.ns, s.prefix, id))
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}
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return value
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}
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func (s *store) Verify(id, answer string, clear bool) bool {
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value := s.Get(id, clear)
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if value == "" || answer == "" {
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return false
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}
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return strings.ToLower(value) == strings.ToLower(answer)
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}
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func NewStore(cache cache.Repo, ttl time.Duration, namespace string) base64Captcha.Store {
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return &store{
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cache: cache,
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ttl: ttl,
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ns: namespace,
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prefix: "captcha:base64:",
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}
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}
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var _ Captcha = (*captcha)(nil)
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type Captcha interface {
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Generate() (id, b64s, answer string, err error)
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Verify(id, value string) bool
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}
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type captcha struct {
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driver base64Captcha.Driver
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store base64Captcha.Store
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}
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func NewStringCaptcha(store base64Captcha.Store, height, width, length int) Captcha {
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conf := &base64Captcha.DriverString{
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Height: height,
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Width: width,
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NoiseCount: length,
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ShowLineOptions: base64Captcha.OptionShowHollowLine,
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Length: length,
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Source: "ABCDEFGHIJKMNPQRSTUVWXYZabcdefghijkmnpqrstuvwxyz0123456789",
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}
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return &captcha{
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driver: conf.ConvertFonts(),
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store: store,
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}
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}
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func NewDigitCaptcha(store base64Captcha.Store, height, width, length int) Captcha {
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conf := base64Captcha.NewDriverDigit(height, width, length, 0.7, height)
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return &captcha{
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driver: conf,
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store: store,
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}
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}
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func (c *captcha) Generate() (id, b64s, answer string, err error) {
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newCaptcha := base64Captcha.NewCaptcha(c.driver, c.store)
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return newCaptcha.Generate()
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}
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func (c *captcha) Verify(id, value string) bool {
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return c.store.Verify(id, value, true)
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}
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