securityd_service/KeyStore/KeyStoreEvents.c

   1 /* Copyright (c) 2013 Apple Inc. All rights reserved. */
   2
   3 #include "AppleKeyStoreEvents.h"
   4
   5 #include <unistd.h>
   6 #include <notify.h>
   7 #include <syslog.h>
   8 #include <AssertMacros.h>
   9 #include <IOKit/IOKitLib.h>
  10 #include <Kernel/IOKit/crypto/AppleKeyStoreDefs.h>
  11 #include <xpc/event_private.h>
  12
  13 static void aksNotificationCallback(void *refcon,io_service_t service, natural_t messageType, void *messageArgument)
  14 {
  15         if(messageType == kAppleKeyStoreLockStateChangeMessage) {
  16 //        syslog(LOG_ERR, "KeyStoreNotifier - %s posting notification: %s\n", __func__, kAppleKeyStoreLockStatusNotificationID);
  17                 notify_post(kAppleKeyStoreLockStatusNotificationID);
  18         } else if (messageType == kAppleKeyStoreFirstUnlockMessage) {
  19 //        syslog(LOG_ERR, "KeyStoreNotifier - %s posting notification: %s\n", __func__, kAppleKeyStoreFirstUnlockNotificationID);
  20                 notify_post(kAppleKeyStoreFirstUnlockNotificationID);
  21     }
  22 }
  23
  24 static void start(dispatch_queue_t queue)
  25 {
  26         IOReturn result;
  27         io_service_t aksService = IO_OBJECT_NULL;
  28         IONotificationPortRef aksNotifyPort = IO_OBJECT_NULL;
  29         io_object_t notification = IO_OBJECT_NULL;
  30
  31         aksService = IOServiceGetMatchingService(kIOMasterPortDefault, IOServiceMatching(kAppleKeyStoreServiceName));
  32         require_action(aksService, cleanup, syslog(LOG_ERR, "KeyStoreNotifier - Can't find %s service", kAppleKeyStoreServiceName));
  33
  34         aksNotifyPort = IONotificationPortCreate(kIOMasterPortDefault);
  35         require_action(aksNotifyPort, cleanup, syslog(LOG_ERR, "KeyStoreNotifier - Can't create notification port"));
  36
  37     IONotificationPortSetDispatchQueue(aksNotifyPort, queue);
  38
  39         result = IOServiceAddInterestNotification(aksNotifyPort, aksService, kIOGeneralInterest, aksNotificationCallback, NULL, &notification);
  40         require_noerr_action(result, cleanup, syslog(LOG_ERR, "KeyStoreNotifier - Can't register for notification: %08x", result));
  41         return;
  42
  43 cleanup:
  44         if (aksNotifyPort) IONotificationPortDestroy(aksNotifyPort);
  45     if (notification) IOObjectRelease(notification);
  46     if (aksService) IOObjectRelease(aksService);
  47         return;
  48 }
  49
  50 void
  51 init_keystore_events(xpc_event_module_t module)
  52 {
  53     start(xpc_event_module_get_queue(module));
  54 }