configd.tproj/_confignotify.c

   1 /*
   2  * Copyright (c) 2000-2002 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * The contents of this file constitute Original Code as defined in and
   7  * are subject to the Apple Public Source License Version 1.1 (the
   8  * "License").  You may not use this file except in compliance with the
   9  * License.  Please obtain a copy of the License at
  10  * http://www.apple.com/publicsource and read it before using this file.
  11  *
  12  * This Original Code and all software distributed under the License are
  13  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  14  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  15  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
  17  * License for the specific language governing rights and limitations
  18  * under the License.
  19  *
  20  * @APPLE_LICENSE_HEADER_END@
  21  */
  22
  23 /*
  24  * Modification History
  25  *
  26  * May 19, 2001                 Allan Nathanson <ajn@apple.com>
  27  * - initial revision
  28  */
  29
  30 #include "configd.h"
  31 #include "session.h"
  32
  33 int
  34 __SCDynamicStoreNotifyValue(SCDynamicStoreRef store, CFStringRef key)
  35 {
  36         SCDynamicStorePrivateRef        storePrivate = (SCDynamicStorePrivateRef)store;
  37         int                             sc_status       = kSCStatusOK;
  38         CFDictionaryRef                 dict;
  39         Boolean                         newValue        = FALSE;
  40         CFPropertyListRef               value;
  41
  42         SCLog(_configd_verbose, LOG_DEBUG, CFSTR("__SCDynamicStoreNotifyValue:"));
  43         SCLog(_configd_verbose, LOG_DEBUG, CFSTR("  key = %@"), key);
  44
  45         if (!store || (storePrivate->server == MACH_PORT_NULL)) {
  46                 return kSCStatusNoStoreSession; /* you must have an open session to play */
  47         }
  48
  49         /*
  50          * 1. Ensure that we hold the lock.
  51          */
  52         sc_status = __SCDynamicStoreLock(store, TRUE);
  53         if (sc_status != kSCStatusOK) {
  54                 return sc_status;
  55         }
  56
  57         /*
  58          * 2. Tickle the value in the dynamic store
  59          */
  60         dict = CFDictionaryGetValue(storeData, key);
  61         if (!dict || !CFDictionaryGetValueIfPresent(dict, kSCDData, (const void **)&value)) {
  62                 /* key doesn't exist (or data never defined) */
  63                 value = CFDateCreate(NULL, CFAbsoluteTimeGetCurrent());
  64                 newValue = TRUE;
  65         }
  66
  67         /* replace or store initial/temporary existing value */
  68         __SCDynamicStoreSetValue(store, key, value);
  69
  70         if (newValue) {
  71                 /* remove the value we just created */
  72                 __SCDynamicStoreRemoveValue(store, key);
  73                 CFRelease(value);
  74         }
  75
  76         /*
  77          * 3. Release our lock.
  78          */
  79         __SCDynamicStoreUnlock(store, TRUE);
  80
  81         return sc_status;
  82 }
  83
  84
  85 kern_return_t
  86 _confignotify(mach_port_t               server,
  87               xmlData_t                 keyRef,         /* raw XML bytes */
  88               mach_msg_type_number_t    keyLen,
  89               int                       *sc_status
  90 )
  91 {
  92         serverSessionRef        mySession = getSession(server);
  93         CFStringRef             key;            /* key  (un-serialized) */
  94
  95         SCLog(_configd_verbose, LOG_DEBUG, CFSTR("Notify key in configuration database."));
  96         SCLog(_configd_verbose, LOG_DEBUG, CFSTR("  server = %d"), server);
  97
  98         /* un-serialize the key */
  99         if (!_SCUnserialize((CFPropertyListRef *)&key, (void *)keyRef, keyLen)) {
 100                 *sc_status = kSCStatusFailed;
 101                 return KERN_SUCCESS;
 102         }
 103
 104         if (!isA_CFString(key)) {
 105                 CFRelease(key);
 106                 *sc_status = kSCStatusInvalidArgument;
 107                 return KERN_SUCCESS;
 108         }
 109
 110         *sc_status = __SCDynamicStoreNotifyValue(mySession->store, key);
 111         CFRelease(key);
 112
 113         return KERN_SUCCESS;
 114 }