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* WIP web ui initial commit * update url structure * web ui progress * configure CI to run golint * actually install golint before running it * add a GetTotalPoints() method to database * add templating, better webui config, and a functional site * oops * implement authentication * update README to include documentatin for the web UI * that might not have been necessary after all * update circleci config
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,106 @@ | ||
| package webui | ||
|
|
||
| import ( | ||
| "net/http" | ||
| "sync" | ||
| "time" | ||
|
|
||
| "github.com/pquerna/otp/totp" | ||
| "github.com/satori/go.uuid" | ||
| ) | ||
|
|
||
| type authMiddleware struct { | ||
| handler http.Handler | ||
| } | ||
|
|
||
| type Client struct { | ||
| UUID string | ||
| Added time.Time | ||
| } | ||
|
|
||
| var ( | ||
| authedClients []*Client | ||
| clientsMutex sync.RWMutex | ||
| ) | ||
|
|
||
| func mustAuth(h http.HandlerFunc) *authMiddleware { | ||
| return &authMiddleware{http.HandlerFunc(h)} | ||
| } | ||
|
|
||
| func (h *authMiddleware) ServeHTTP(w http.ResponseWriter, r *http.Request) { | ||
| cookie, err := r.Cookie("session") | ||
|
|
||
| if err != nil { | ||
| if err != http.ErrNoCookie { | ||
| config.Logger.Printf("could not auth user: %s\n", err.Error()) | ||
| http.Error(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError) | ||
|
|
||
| return | ||
| } | ||
|
|
||
| err = nil | ||
| } | ||
|
|
||
| authed := false | ||
| if cookie != nil { | ||
| clientsMutex.RLock() | ||
| for _, client := range authedClients { | ||
| if cookie.Value == client.UUID { | ||
| authed = true | ||
| break | ||
| } | ||
| } | ||
| clientsMutex.RUnlock() | ||
| } | ||
|
|
||
| if !authed && hasValidTOTPToken(r) { | ||
| cookie = &http.Cookie{ | ||
| Name: "session", | ||
| Value: uuid.NewV4().String(), | ||
| } | ||
|
|
||
| clientsMutex.Lock() | ||
| authedClients = append(authedClients, &Client{ | ||
| UUID: cookie.Value, | ||
| Added: time.Now(), | ||
| }) | ||
| clientsMutex.Unlock() | ||
|
|
||
| authed = true | ||
| http.SetCookie(w, cookie) | ||
| } | ||
|
|
||
| if !authed { | ||
| renderTemplate(w, "unauthed.html", &templateData{ | ||
| Config: config, | ||
| Data: nil, | ||
| }) | ||
| return | ||
| } | ||
|
|
||
| h.handler.ServeHTTP(w, r) | ||
| } | ||
|
|
||
| func hasValidTOTPToken(r *http.Request) bool { | ||
| token := r.URL.Query().Get("token") | ||
| if token == "" { | ||
| return false | ||
| } | ||
|
|
||
| return totp.Validate(token, config.TOTPKey) | ||
| } | ||
|
|
||
| func expireClients() { | ||
| for { | ||
| <-time.After(2 * time.Minute) | ||
| go func() { | ||
| now := time.Now() | ||
|
|
||
| for i, client := range authedClients { | ||
| if now.Sub(client.Added).Hours() >= 48 { | ||
| authedClients = append(authedClients[:i], authedClients[i+1:]...) | ||
| } | ||
| } | ||
| }() | ||
| } | ||
| } |
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