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check for incorrect pin

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This commit is contained in:
Carlosokumu 2025-01-06 22:54:31 +03:00
parent 90df0eefc3
commit 562bd4fa24
Signed by untrusted user: carlos
GPG Key ID: 7BD6BC8160A5C953
1 changed files with 44 additions and 0 deletions
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44
internal/handlers/ussd/menuhandler.go
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@ -739,6 +739,7 @@ func (h *Handlers) Authorize(ctx context.Context, sym string, input []byte) (res
res.FlagReset = append(res.FlagReset, flag_account_authorized)
}
} else {
h.countIncorrectPINAttempts(ctx, sessionId)
res.FlagSet = append(res.FlagSet, flag_incorrect_pin)
res.FlagReset = append(res.FlagReset, flag_account_authorized)
return res, nil
@ -752,6 +753,24 @@ func (h *Handlers) Authorize(ctx context.Context, sym string, input []byte) (res
// ResetIncorrectPin resets the incorrect pin flag after a new PIN attempt.
func (h *Handlers) ResetIncorrectPin(ctx context.Context, sym string, input []byte) (resource.Result, error) {
var res resource.Result
store := h.userdataStore
sessionId, ok := ctx.Value("SessionId").(string)
if !ok {
return res, fmt.Errorf("missing session")
}
currentWrongPinAttempts, err := store.ReadEntry(ctx, sessionId, common.DATA_INCORRECT_PIN_ATTEMPTS)
if err != nil {
if !db.IsNotFound(err) {
return res, err
}
}
pinAttemptsValue, _ := strconv.ParseUint(string(currentWrongPinAttempts), 0, 64)
remainingPINAttempts := common.AllowedPINAttempts - uint8(pinAttemptsValue)
if remainingPINAttempts < common.AllowedPINAttempts {
res.Content = string(remainingPINAttempts)
}
flag_incorrect_pin, _ := h.flagManager.GetFlag("flag_incorrect_pin")
res.FlagReset = append(res.FlagReset, flag_incorrect_pin)
return res, nil
@ -2075,3 +2094,28 @@ func (h *Handlers) UpdateAllProfileItems(ctx context.Context, sym string, input
}
return res, nil
}
func (h *Handlers) countIncorrectPINAttempts(ctx context.Context, sessionId string) {
var pinAttemptsCount uint8
store := h.userdataStore
currentWrongPinAttempts, err := store.ReadEntry(ctx, sessionId, common.DATA_INCORRECT_PIN_ATTEMPTS)
if err != nil {
if db.IsNotFound(err) {
//First time Wrong PIN attempt: initialize with a count of 1
pinAttemptsCount = 1
err = store.WriteEntry(ctx, sessionId, common.DATA_INCORRECT_PIN_ATTEMPTS, []byte(strconv.Itoa(int(pinAttemptsCount))))
if err != nil {
logg.ErrorCtxf(ctx, "failed to write incorrect PIN attempts ", "key", common.DATA_INCORRECT_PIN_ATTEMPTS, "value", currentWrongPinAttempts, "error", err)
}
return
}
}
pinAttemptsValue, _ := strconv.ParseUint(string(currentWrongPinAttempts), 0, 64)
pinAttemptsCount = uint8(pinAttemptsValue) + 1
err = store.WriteEntry(ctx, sessionId, common.DATA_INCORRECT_PIN_ATTEMPTS, []byte(strconv.Itoa(int(pinAttemptsCount))))
if err != nil {
logg.ErrorCtxf(ctx, "failed to write incorrect PIN attempts ", "key", common.DATA_INCORRECT_PIN_ATTEMPTS, "value", pinAttemptsCount, "error", err)
}
}