77 lines
1.6 KiB
Go
77 lines
1.6 KiB
Go
package handlers
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import (
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"fmt"
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"image/png"
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"justcaptcha/internal/captcha"
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"justcaptcha/pkg/server"
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"net/http"
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"time"
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)
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type CaptchaHandlers struct {
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ExpireIn time.Duration
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}
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func New(expiration time.Duration) *CaptchaHandlers {
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return &CaptchaHandlers{
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ExpireIn: expiration}
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}
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func (h *CaptchaHandlers) New(w http.ResponseWriter, r *http.Request) {
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dc := captcha.NewDwellingCaptcha(h.ExpireIn)
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_, id := captcha.New(r.RemoteAddr, dc)
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fmt.Fprint(w, id)
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}
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func (h *CaptchaHandlers) Image(w http.ResponseWriter, r *http.Request) {
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captchaID := captcha.ID(server.GetURLParam(r, "captcha"))
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captchaImage, err := captcha.Image(captchaID)
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if err != nil {
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w.WriteHeader(http.StatusNotFound)
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return
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}
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if captchaImage == nil {
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w.WriteHeader(http.StatusInternalServerError)
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return
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}
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w.Header().Add("Content-Disposition", "inline; filename=\""+string(captchaID)+"\"")
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png.Encode(w, *captchaImage)
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}
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func (h *CaptchaHandlers) Solve(w http.ResponseWriter, r *http.Request) {
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r.ParseForm()
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captchaID := captcha.ID(server.GetURLParam(r, "captcha"))
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answer := captcha.Answer(r.FormValue("answer"))
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ok, err := captcha.Solve(captcha.ID(captchaID), answer)
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if err != nil {
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w.WriteHeader(http.StatusNotFound)
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return
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}
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if !ok {
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w.WriteHeader(http.StatusForbidden)
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}
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}
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func (h *CaptchaHandlers) IsSolved(w http.ResponseWriter, r *http.Request) {
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captchaID := captcha.ID(server.GetURLParam(r, "captcha"))
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solved, err := captcha.IsSolved(captchaID)
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if err != nil {
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w.WriteHeader(http.StatusNotFound)
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return
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}
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if !solved {
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w.WriteHeader(http.StatusForbidden)
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}
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}
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