SystemConfiguration.fproj/SCDNotify.c

   1 /*
   2  * Copyright (c) 2000-2005, 2009-2011, 2013, 2016-2019 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 /*
  25  * Modification History
  26  *
  27  * May 19, 2001         Allan Nathanson <ajn@apple.com>
  28  * - initial revision
  29  */
  30
  31 #include "SCDynamicStoreInternal.h"
  32 #include "config.h"             /* MiG generated file */
  33
  34 Boolean
  35 SCDynamicStoreNotifyValue(SCDynamicStoreRef     store,
  36                           CFStringRef           key)
  37 {
  38         SCDynamicStorePrivateRef        storePrivate;
  39         kern_return_t                   status;
  40         CFDataRef                       utfKey;         /* serialized key */
  41         xmlData_t                       myKeyRef;
  42         CFIndex                         myKeyLen;
  43         int                             sc_status;
  44
  45         if (store == NULL) {
  46                 store = __SCDynamicStoreNullSession();
  47                 if (store == NULL) {
  48                         /* sorry, you must provide a session */
  49                         _SCErrorSet(kSCStatusNoStoreSession);
  50                         return FALSE;
  51                 }
  52         }
  53
  54         storePrivate = (SCDynamicStorePrivateRef)store;
  55         if (storePrivate->server == MACH_PORT_NULL) {
  56                 /* sorry, you must have an open session to play */
  57                 _SCErrorSet(kSCStatusNoStoreServer);
  58                 return FALSE;
  59         }
  60
  61         if (storePrivate->cache_active) {
  62                 if (storePrivate->cached_notifys == NULL)  {
  63                         storePrivate->cached_notifys = CFArrayCreateMutable(NULL,
  64                                                                             0,
  65                                                                             &kCFTypeArrayCallBacks);
  66                 }
  67
  68                 if (!CFArrayContainsValue(storePrivate->cached_notifys,
  69                                           CFRangeMake(0, CFArrayGetCount(storePrivate->cached_notifys)),
  70                                           key)) {
  71                         CFArrayAppendValue(storePrivate->cached_notifys, key);
  72                 }
  73
  74                 return TRUE;
  75         }
  76
  77         /* serialize the key */
  78         if (!_SCSerializeString(key, &utfKey, (void **)&myKeyRef, &myKeyLen)) {
  79                 _SCErrorSet(kSCStatusFailed);
  80                 return FALSE;
  81         }
  82
  83     retry :
  84
  85         /* send the key to the server */
  86         status = confignotify(storePrivate->server,
  87                               myKeyRef,
  88                               (mach_msg_type_number_t)myKeyLen,
  89                               (int *)&sc_status);
  90
  91         if (__SCDynamicStoreCheckRetryAndHandleError(store,
  92                                                      status,
  93                                                      &sc_status,
  94                                                      "SCDynamicStoreNotifyValue confignotify()")) {
  95                 goto retry;
  96         }
  97
  98         /* clean up */
  99         CFRelease(utfKey);
 100
 101         if (sc_status != kSCStatusOK) {
 102                 _SCErrorSet(sc_status);
 103                 return FALSE;
 104         }
 105
 106         return TRUE;
 107 }