tzlink.c

   1 /*
   2  * Copyright (c) 2013 Apple Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. Please obtain a copy of the License at
  10  * http://www.opensource.apple.com/apsl/ and read it before using this
  11  * file.
  12  *
  13  * The Original Code and all software distributed under the License are
  14  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  15  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  16  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  18  * Please see the License for the specific language governing rights and
  19  * limitations under the License.
  20  *
  21  * @APPLE_LICENSE_HEADER_END@
  22  */
  23
  24 #include <TargetConditionals.h>
  25 #include <xpc/xpc.h>
  26 #include <errno.h>
  27
  28 #include "tzlink.h"
  29 #include "tzlink_internal.h"
  30
  31 errno_t
  32 tzlink(const char *tz)
  33 {
  34 #if TARGET_OS_IPHONE && !TARGET_IPHONE_SIMULATOR
  35         xpc_connection_t connection;
  36         xpc_object_t request, reply;
  37         errno_t e;
  38
  39         if (tz == NULL) {
  40                 return EINVAL;
  41         }
  42
  43         connection = xpc_connection_create_mach_service(TZLINK_SERVICE_NAME, NULL, XPC_CONNECTION_MACH_SERVICE_PRIVILEGED);
  44         xpc_connection_set_event_handler(connection, ^(__unused xpc_object_t event) {
  45         });
  46         xpc_connection_resume(connection);
  47
  48         request = xpc_dictionary_create(NULL, NULL, 0);
  49         xpc_dictionary_set_string(request, TZLINK_KEY_REQUEST_TIMEZONE, tz);
  50
  51         reply = xpc_connection_send_message_with_reply_sync(connection, request);
  52         if (xpc_get_type(reply) == XPC_TYPE_DICTIONARY) {
  53                 e = (errno_t)xpc_dictionary_get_uint64(reply, TZLINK_KEY_REPLY_ERROR);
  54         } else {
  55                 e = EIO;
  56         }
  57
  58         xpc_release(reply);
  59         xpc_release(request);
  60         xpc_release(connection);
  61
  62         return e;
  63 #else /* !TARGET_OS_IPHONE */
  64 #pragma unused (tz)
  65         return ENOTSUP;
  66 #endif /* TARGET_OS_IPHONE */
  67 }