replace recaptcha with self-hosted captcha #281
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,76 @@ | ||
| package controllers | ||
|
|
||
| import ( | ||
| "bytes" | ||
| "net/http" | ||
| "path" | ||
| "strings" | ||
| "time" | ||
|
|
||
| "github.com/dchest/captcha" | ||
| "github.com/zenazn/goji/web" | ||
| ) | ||
|
|
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| type CaptchaHandler struct { | ||
| ImgWidth int | ||
| ImgHeight int | ||
| } | ||
|
|
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| func (controller *MainController) CaptchaServe(c web.C, w http.ResponseWriter, r *http.Request) { | ||
| // Get the captcha id by stripping the file extension. | ||
| _, file := path.Split(r.URL.Path) | ||
| ext := path.Ext(file) | ||
| id := strings.TrimSuffix(file, ext) | ||
| if ext != ".png" || id == "" { | ||
| http.NotFound(w, r) | ||
| return | ||
| } | ||
|
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| h := controller.captchaHandler | ||
|
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| if r.FormValue("reload") != "" { | ||
| captcha.Reload(id) | ||
| } | ||
|
|
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| w.Header().Set("Cache-Control", "no-cache, no-store, must-revalidate") | ||
| w.Header().Set("Pragma", "no-cache") | ||
| w.Header().Set("Expires", "0") | ||
|
|
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| var content bytes.Buffer | ||
| w.Header().Set("Content-Type", "image/png") | ||
| err := captcha.WriteImage(&content, id, h.ImgWidth, h.ImgHeight) | ||
| if err != nil { | ||
| http.Error(w, "failed to generate captcha image", http.StatusInternalServerError) | ||
| } | ||
|
|
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| http.ServeContent(w, r, id+ext, time.Time{}, bytes.NewReader(content.Bytes())) | ||
| } | ||
|
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| func (controller *MainController) CaptchaVerify(c web.C, w http.ResponseWriter, r *http.Request) { | ||
| id, solution := r.FormValue("captchaId"), r.FormValue("captchaSolution") | ||
| if id == "" { | ||
| http.Error(w, "invalid captcha id", http.StatusBadRequest) | ||
| return | ||
| } | ||
|
|
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| session := controller.GetSession(c) | ||
| w.Header().Set("Content-Type", "text/html; charset=utf-8") | ||
| if captcha.VerifyString(id, solution) { | ||
| session.Values["CaptchaDone"] = true | ||
| } else { | ||
| session.Values["CaptchaDone"] = false | ||
|
There was a problem hiding this comment. Should probably do a |
||
| session.AddFlash("Captcha verification failed. Please try again.", | ||
| "captchaFailed") | ||
| } | ||
|
|
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| if err := session.Save(r, w); err != nil { | ||
| log.Criticalf("session.Save() failed: %v", err) | ||
| http.Error(w, "failed to save session", http.StatusInternalServerError) | ||
| } | ||
|
|
||
| ref := r.Referer() | ||
| if ref == "" { | ||
| ref = "/" | ||
| } | ||
| http.Redirect(w, r, ref, http.StatusFound) | ||
| } | ||
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I need to doc all these exported things. And copyright the file.