b1dc8fcc4e
Add gorilla/csrf middleware to protect all HTML-serving routes against
cross-site request forgery attacks. The webhook endpoint is excluded
since it uses secret-based authentication.
Changes:
- Add gorilla/csrf v1.7.3 dependency
- Add CSRF() middleware method using session secret as key
- Apply CSRF middleware to all HTML route groups in routes.go
- Pass CSRF token to all templates via addGlobals helper
- Add {{ .CSRFField }} / {{ $.CSRFField }} hidden inputs to all forms
Closes #11
121 lines
2.9 KiB
Go
121 lines
2.9 KiB
Go
package handlers
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import (
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"net/http"
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"git.eeqj.de/sneak/upaas/templates"
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)
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const (
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// minPasswordLength is the minimum required password length.
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minPasswordLength = 8
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)
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// HandleSetupGET returns the setup page handler.
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func (h *Handlers) HandleSetupGET() http.HandlerFunc {
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tmpl := templates.GetParsed()
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return func(writer http.ResponseWriter, request *http.Request) {
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data := h.addGlobals(map[string]any{}, request)
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err := tmpl.ExecuteTemplate(writer, "setup.html", data)
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if err != nil {
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h.log.Error("template execution failed", "error", err)
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http.Error(writer, "Internal Server Error", http.StatusInternalServerError)
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}
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}
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}
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// setupFormData holds form data for the setup page.
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type setupFormData struct {
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username string
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password string
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passwordConfirm string
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}
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// validateSetupForm validates the setup form and returns an error message if invalid.
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func validateSetupForm(formData setupFormData) string {
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if formData.username == "" || formData.password == "" {
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return "Username and password are required"
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}
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if len(formData.password) < minPasswordLength {
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return "Password must be at least 8 characters"
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}
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if formData.password != formData.passwordConfirm {
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return "Passwords do not match"
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}
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return ""
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}
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// renderSetupError renders the setup page with an error message.
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func (h *Handlers) renderSetupError(
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tmpl *templates.TemplateExecutor,
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writer http.ResponseWriter,
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request *http.Request,
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username string,
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errorMsg string,
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) {
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data := h.addGlobals(map[string]any{
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"Username": username,
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"Error": errorMsg,
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}, request)
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_ = tmpl.ExecuteTemplate(writer, "setup.html", data)
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}
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// HandleSetupPOST handles the setup form submission.
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func (h *Handlers) HandleSetupPOST() http.HandlerFunc {
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tmpl := templates.GetParsed()
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return func(writer http.ResponseWriter, request *http.Request) {
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parseErr := request.ParseForm()
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if parseErr != nil {
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http.Error(writer, "Bad Request", http.StatusBadRequest)
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return
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}
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formData := setupFormData{
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username: request.FormValue("username"),
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password: request.FormValue("password"),
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passwordConfirm: request.FormValue("password_confirm"),
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}
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if validationErr := validateSetupForm(formData); validationErr != "" {
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h.renderSetupError(tmpl, writer, request, formData.username, validationErr)
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return
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}
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user, createErr := h.auth.CreateUser(
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request.Context(),
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formData.username,
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formData.password,
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)
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if createErr != nil {
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h.log.Error("failed to create user", "error", createErr)
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h.renderSetupError(tmpl, writer, request, formData.username, "Failed to create user")
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return
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}
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sessionErr := h.auth.CreateSession(writer, request, user)
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if sessionErr != nil {
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h.log.Error("failed to create session", "error", sessionErr)
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h.renderSetupError(
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tmpl,
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writer,
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request,
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formData.username,
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"Failed to create session",
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)
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return
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}
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http.Redirect(writer, request, "/", http.StatusSeeOther)
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}
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}
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