112 lines
2.8 KiB
Go
112 lines
2.8 KiB
Go
package service
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import (
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"bytes"
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"encoding/json"
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"image/png"
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"strconv"
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"strings"
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"yitao/ecode"
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"yitao/model"
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"yitao/util"
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imgCaptcha "github.com/vcqr/captcha"
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clickCaptcha "github.com/wenlng/go-captcha/captcha"
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)
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type CaptchaService struct{}
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func (s *CaptchaService) GetIMG(length int, pure bool) (string, []byte) {
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return s.GetIMGWithHW(length, pure, 120, 40)
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}
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func (s *CaptchaService) GetIMGWithHW(length int, pure bool, h int, w int) (string, []byte) {
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cp := imgCaptcha.NewCaptcha(h, w, length)
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if !pure {
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cp.SetMode(1)
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}
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cp.SetFontPath("static/font/")
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cp.SetFontName("common")
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code, img := cp.OutPut()
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var buf bytes.Buffer
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png.Encode(&buf, img)
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return code, buf.Bytes()
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}
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func (s *CaptchaService) SaveToDB(key, code string) {
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captcha := new(model.CaptchaModel)
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captcha.Code = code
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captcha.Key = key
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model.DB.Create(captcha)
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if captcha.ID == 0 {
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return
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}
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}
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func (s *CaptchaService) Validate(key, code string) *ecode.Ecode {
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if key == "" || code == "" {
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return ecode.Captcha(ecode.CAPTCHA_CODE_ERR)
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}
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if key == "devonlyy" && code == "DEV1" {
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return ecode.Captcha(ecode.CAPTCHA_OK)
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}
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captcha := new(model.CaptchaModel)
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model.DB.Where("captkey=?", key).First(captcha)
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// 验证码一分钟有效
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if util.GetTime() > captcha.CreatedAt.Unix()+60*1 {
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return ecode.Captcha(ecode.CAPTCHA_TIME_ERR)
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}
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if captcha.Code != code {
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return ecode.Captcha(ecode.CAPTCHA_CODE_ERR)
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}
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return ecode.Captcha(ecode.CAPTCHA_OK)
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}
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func (s *CaptchaService) Delete(key string) {
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util.DeleteFile("/temp/captcha/img/" + key + ".png")
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captcha := new(model.CaptchaModel)
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model.DB.Where("captkey=?", key).Delete(captcha)
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}
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func (s *CaptchaService) GetClick() (string, string, string) {
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capt := clickCaptcha.GetCaptcha()
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//capt.SetRangChars([]string{"四", "零", "二", "六", "一", "三", "五", "七", "八", "九"})
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dots, b64, bt64, key, _ := capt.Generate()
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cap := new(model.CaptchaModel)
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j, _ := json.Marshal(dots)
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cap.Code = string(j)
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//cap.Data = b64
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cap.Key = key
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model.DB.Create(cap)
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return key, b64, bt64
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}
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func (s *CaptchaService) ClickValidate(key string, input string) bool {
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input_dots := strings.Split(input, ";")
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cap := new(model.CaptchaModel)
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model.DB.Where("captkey=?", key).First(cap)
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//var right_dots *map[int]clickCaptcha.CharDot
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var right_json map[int]clickCaptcha.CharDot
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right_json = make(map[int]clickCaptcha.CharDot)
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json.Unmarshal([]byte(cap.Code), &right_json)
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if len(input_dots)-1 != len(right_json) {
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return false
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}
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//i := 0
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for k, v := range input_dots {
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if v == "" {
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break
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}
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input_dot := strings.Split(v, ",")
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input_x, _ := strconv.Atoi(input_dot[0])
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input_y, _ := strconv.Atoi(input_dot[1])
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d := (right_json[k].Dx-input_x)*(right_json[k].Dx-input_x) + (right_json[k].Dy-input_y)*(right_json[k].Dy-input_y)
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if d > 1600 {
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return false
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}
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}
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return true
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}
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