configd.tproj/_notifychanges.c

   1 /*
   2  * Copyright (c) 2000-2004, 2006, 2011, 2013, 2015 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  * June 1, 2001                 Allan Nathanson <ajn@apple.com>
  28  * - public API conversion
  29  *
  30  * March 24, 2000               Allan Nathanson <ajn@apple.com>
  31  * - initial revision
  32  */
  33
  34 #include "configd.h"
  35 #include "session.h"
  36
  37 __private_extern__
  38 int
  39 __SCDynamicStoreCopyNotifiedKeys(SCDynamicStoreRef store, CFArrayRef *notifierKeys)
  40 {
  41         SCDynamicStorePrivateRef        storePrivate = (SCDynamicStorePrivateRef)store;
  42         CFStringRef                     sessionKey;
  43         CFDictionaryRef                 info;
  44         CFMutableDictionaryRef          newInfo;
  45
  46         sessionKey = CFStringCreateWithFormat(NULL, NULL, CFSTR("%d"), storePrivate->server);
  47         info = CFDictionaryGetValue(sessionData, sessionKey);
  48         if ((info == NULL) ||
  49             !CFDictionaryContainsKey(info, kSCDChangedKeys)) {
  50                 CFRelease(sessionKey);
  51                 *notifierKeys = CFArrayCreate(NULL, NULL, 0, &kCFTypeArrayCallBacks);
  52                 return kSCStatusOK;
  53         }
  54         newInfo = CFDictionaryCreateMutableCopy(NULL, 0, info);
  55
  56         *notifierKeys = CFDictionaryGetValue(newInfo, kSCDChangedKeys);
  57         CFRetain(*notifierKeys);
  58
  59         CFDictionaryRemoveValue(newInfo, kSCDChangedKeys);
  60         if (CFDictionaryGetCount(newInfo) > 0) {
  61                 CFDictionarySetValue(sessionData, sessionKey, newInfo);
  62         } else {
  63                 CFDictionaryRemoveValue(sessionData, sessionKey);
  64         }
  65         CFRelease(newInfo);
  66         CFRelease(sessionKey);
  67
  68         return kSCStatusOK;
  69 }
  70
  71
  72 __private_extern__
  73 kern_return_t
  74 _notifychanges(mach_port_t                      server,
  75                xmlDataOut_t                     *listRef,       /* raw XML bytes */
  76                mach_msg_type_number_t           *listLen,
  77                int                              *sc_status
  78 )
  79 {
  80         CFIndex                 len;
  81         serverSessionRef        mySession = getSession(server);
  82         CFArrayRef              notifierKeys;   /* array of CFStringRef's */
  83         Boolean                 ok;
  84
  85         *listRef = NULL;
  86         *listLen = 0;
  87
  88         if (mySession == NULL) {
  89                 *sc_status = kSCStatusNoStoreSession;   /* you must have an open session to play */
  90                 return KERN_SUCCESS;
  91         }
  92
  93         *sc_status = __SCDynamicStoreCopyNotifiedKeys(mySession->store, &notifierKeys);
  94         if (*sc_status != kSCStatusOK) {
  95                 return KERN_SUCCESS;
  96         }
  97
  98         /* serialize the array of keys */
  99         ok = _SCSerialize(notifierKeys, NULL, (void **)listRef, &len);
 100         *listLen = (mach_msg_type_number_t)len;
 101         CFRelease(notifierKeys);
 102         if (!ok) {
 103                 *sc_status = kSCStatusFailed;
 104                 return KERN_SUCCESS;
 105         }
 106
 107         return KERN_SUCCESS;
 108 }