configd.tproj/_notifychanges.c

   1 /*
   2  * Copyright (c) 2000-2003 Apple Computer, 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         SCLog(_configd_verbose, LOG_DEBUG, CFSTR("__SCDynamicStoreCopyNotifiedKeys:"));
  47
  48         if (!store || (storePrivate->server == MACH_PORT_NULL)) {
  49                 return kSCStatusNoStoreSession; /* you must have an open session to play */
  50         }
  51
  52         sessionKey = CFStringCreateWithFormat(NULL, NULL, CFSTR("%d"), storePrivate->server);
  53         info = CFDictionaryGetValue(sessionData, sessionKey);
  54         if ((info == NULL) ||
  55             (CFDictionaryContainsKey(info, kSCDChangedKeys) == FALSE)) {
  56                 CFRelease(sessionKey);
  57                 *notifierKeys = CFArrayCreate(NULL, NULL, 0, &kCFTypeArrayCallBacks);;
  58                 return kSCStatusOK;
  59         }
  60         newInfo = CFDictionaryCreateMutableCopy(NULL, 0, info);
  61
  62         *notifierKeys = CFDictionaryGetValue(newInfo, kSCDChangedKeys);
  63         CFRetain(*notifierKeys);
  64
  65         CFDictionaryRemoveValue(newInfo, kSCDChangedKeys);
  66         if (CFDictionaryGetCount(newInfo) > 0) {
  67                 CFDictionarySetValue(sessionData, sessionKey, newInfo);
  68         } else {
  69                 CFDictionaryRemoveValue(sessionData, sessionKey);
  70         }
  71         CFRelease(newInfo);
  72         CFRelease(sessionKey);
  73
  74         return kSCStatusOK;
  75 }
  76
  77
  78 __private_extern__
  79 kern_return_t
  80 _notifychanges(mach_port_t                      server,
  81                xmlDataOut_t                     *listRef,       /* raw XML bytes */
  82                mach_msg_type_number_t           *listLen,
  83                int                              *sc_status
  84 )
  85 {
  86         serverSessionRef        mySession = getSession(server);
  87         CFArrayRef              notifierKeys;   /* array of CFStringRef's */
  88         Boolean                 ok;
  89
  90         if (_configd_verbose) {
  91                 SCLog(TRUE, LOG_DEBUG, CFSTR("List notification keys which have changed."));
  92                 SCLog(TRUE, LOG_DEBUG, CFSTR("  server = %d"), server);
  93         }
  94
  95         *listRef = NULL;
  96         *listLen = 0;
  97
  98         if (!mySession) {
  99                 *sc_status = kSCStatusNoStoreSession;   /* you must have an open session to play */
 100                 return KERN_SUCCESS;
 101         }
 102
 103         *sc_status = __SCDynamicStoreCopyNotifiedKeys(mySession->store, &notifierKeys);
 104         if (*sc_status != kSCStatusOK) {
 105                 return KERN_SUCCESS;
 106         }
 107
 108         /* serialize the array of keys */
 109         ok = _SCSerialize(notifierKeys, NULL, (void **)listRef, (CFIndex *)listLen);
 110         CFRelease(notifierKeys);
 111         if (!ok) {
 112                 *sc_status = kSCStatusFailed;
 113                 return KERN_SUCCESS;
 114         }
 115
 116         return KERN_SUCCESS;
 117 }