nemunaire/chldapasswd
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feat(security): add altcha proof-of-work CAPTCHA to all sensitive forms

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Integrate go-altcha to protect login, change password, lost password,
and reset password forms against automated submissions. Serves the
altcha widget JS from the embedded library, exposes a challenge
endpoint, validates responses server-side with replay prevention, and
updates the CSP to allow self-hosted scripts and WebAssembly.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
This commit is contained in:
nemunaire 2026-03-06 15:24:59 +07:00
commit 1e1888625d
14 changed files with 70 additions and 1 deletions
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5
login.go
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@ -53,6 +53,11 @@ func tryLogin(w http.ResponseWriter, r *http.Request) {
return
}
if !validateAltcha(r) {
displayTmplError(w, http.StatusForbidden, "login.html", map[string]interface{}{"error": "Invalid or missing altcha response. Please try again."})
return
}
if entries, err := login(r.PostFormValue("login"), r.PostFormValue("password")); err != nil {
log.Println(err)
displayTmplError(w, http.StatusInternalServerError, "login.html", map[string]interface{}{"error": err.Error()})