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
83 lines
2.1 KiB
Go
83 lines
2.1 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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// HandleLoginGET returns the login page handler.
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func (h *Handlers) HandleLoginGET() 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, "login.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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// HandleLoginPOST handles the login form submission.
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func (h *Handlers) HandleLoginPOST() 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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username := request.FormValue("username")
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password := request.FormValue("password")
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data := h.addGlobals(map[string]any{
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"Username": username,
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}, request)
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if username == "" || password == "" {
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data["Error"] = "Username and password are required"
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_ = tmpl.ExecuteTemplate(writer, "login.html", data)
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return
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}
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user, authErr := h.auth.Authenticate(request.Context(), username, password)
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if authErr != nil {
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data["Error"] = "Invalid username or password"
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_ = tmpl.ExecuteTemplate(writer, "login.html", data)
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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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data["Error"] = "Failed to create session"
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_ = tmpl.ExecuteTemplate(writer, "login.html", data)
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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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// HandleLogout handles logout requests.
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func (h *Handlers) HandleLogout() http.HandlerFunc {
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return func(writer http.ResponseWriter, request *http.Request) {
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destroyErr := h.auth.DestroySession(writer, request)
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if destroyErr != nil {
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h.log.Error("failed to destroy session", "error", destroyErr)
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}
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http.Redirect(writer, request, "/login", http.StatusSeeOther)
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}
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}
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