SystemConfiguration.fproj/SCDNotifierGetChanges.c

   1 /*
   2  * Copyright (c) 2000 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  * June 1, 2001                 Allan Nathanson <ajn@apple.com>
  27  * - public API conversion
  28  *
  29  * March 24, 2000               Allan Nathanson <ajn@apple.com>
  30  * - initial revision
  31  */
  32
  33 #include <mach/mach.h>
  34 #include <mach/mach_error.h>
  35
  36 #include <SystemConfiguration/SystemConfiguration.h>
  37 #include <SystemConfiguration/SCPrivate.h>
  38 #include "SCDynamicStoreInternal.h"
  39 #include "config.h"             /* MiG generated file */
  40
  41 CFArrayRef
  42 SCDynamicStoreCopyNotifiedKeys(SCDynamicStoreRef store)
  43 {
  44         SCDynamicStorePrivateRef        storePrivate = (SCDynamicStorePrivateRef)store;
  45         kern_return_t                   status;
  46         CFDataRef                       xmlData;        /* data (XML serialized) */
  47         xmlDataOut_t                    xmlDataRef;     /* serialized data */
  48         int                             xmlDataLen;
  49         int                             sc_status;
  50         CFArrayRef                      allKeys;
  51         CFStringRef                     xmlError;
  52
  53         SCLog(_sc_verbose, LOG_DEBUG, CFSTR("SCDynamicStoreCopyNotifiedKeys:"));
  54
  55         if (!store) {
  56                 /* sorry, you must provide a session */
  57                 _SCErrorSet(kSCStatusNoStoreSession);
  58                 return NULL;
  59         }
  60
  61         if (storePrivate->server == MACH_PORT_NULL) {
  62                 _SCErrorSet(kSCStatusNoStoreServer);
  63                 return NULL;
  64         }
  65
  66         /* send the key & fetch the associated data from the server */
  67         status = notifychanges(storePrivate->server,
  68                                &xmlDataRef,
  69                                &xmlDataLen,
  70                                (int *)&sc_status);
  71
  72         if (status != KERN_SUCCESS) {
  73                 if (status != MACH_SEND_INVALID_DEST)
  74                         SCLog(_sc_verbose, LOG_DEBUG, CFSTR("notifychanges(): %s"), mach_error_string(status));
  75                 (void) mach_port_destroy(mach_task_self(), storePrivate->server);
  76                 storePrivate->server = MACH_PORT_NULL;
  77                 _SCErrorSet(status);
  78                 return NULL;
  79         }
  80
  81         if (sc_status != kSCStatusOK) {
  82                 status = vm_deallocate(mach_task_self(), (vm_address_t)xmlDataRef, xmlDataLen);
  83                 if (status != KERN_SUCCESS) {
  84                         SCLog(_sc_verbose, LOG_DEBUG, CFSTR("vm_deallocate(): %s"), mach_error_string(status));
  85                         /* non-fatal???, proceed */
  86                 }
  87                 _SCErrorSet(sc_status);
  88                 return NULL;
  89         }
  90
  91         /* un-serialize the list of keys which have changed */
  92         xmlData = CFDataCreate(NULL, xmlDataRef, xmlDataLen);
  93         status = vm_deallocate(mach_task_self(), (vm_address_t)xmlDataRef, xmlDataLen);
  94         if (status != KERN_SUCCESS) {
  95                 SCLog(_sc_verbose, LOG_DEBUG, CFSTR("vm_deallocate(): %s"), mach_error_string(status));
  96                 /* non-fatal???, proceed */
  97         }
  98         allKeys = CFPropertyListCreateFromXMLData(NULL,
  99                                                   xmlData,
 100                                                   kCFPropertyListImmutable,
 101                                                   &xmlError);
 102         CFRelease(xmlData);
 103         if (!allKeys) {
 104                 if (xmlError) {
 105                         SCLog(_sc_verbose, LOG_DEBUG,
 106                                CFSTR("CFPropertyListCreateFromXMLData() list: %@"),
 107                                xmlError);
 108                         CFRelease(xmlError);
 109                 }
 110                 _SCErrorSet(kSCStatusFailed);
 111                 return NULL;
 112         }
 113
 114         return allKeys;
 115 }