SystemConfiguration.fproj/SCDRemove.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  * 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 "SCDynamicStoreInternal.h"
  35 #include "config.h"             /* MiG generated file */
  36
  37
  38 Boolean
  39 SCDynamicStoreRemoveValue(SCDynamicStoreRef store, CFStringRef key)
  40 {
  41         SCDynamicStorePrivateRef        storePrivate;
  42         kern_return_t                   status;
  43         CFDataRef                       utfKey;         /* serialized key */
  44         xmlData_t                       myKeyRef;
  45         CFIndex                         myKeyLen;
  46         int                             sc_status;
  47
  48         if (store == NULL) {
  49                 store = __SCDynamicStoreNullSession();
  50                 if (store == NULL) {
  51                         /* sorry, you must provide a session */
  52                         _SCErrorSet(kSCStatusNoStoreSession);
  53                         return FALSE;
  54                 }
  55         }
  56
  57         storePrivate = (SCDynamicStorePrivateRef)store;
  58         if (storePrivate->server == MACH_PORT_NULL) {
  59                 /* sorry, you must have an open session to play */
  60                 _SCErrorSet(kSCStatusNoStoreServer);
  61                 return FALSE;
  62         }
  63
  64         if (storePrivate->cache_active) {
  65                 if (storePrivate->cached_set != NULL)  {
  66                         CFDictionaryRemoveValue(storePrivate->cached_set, key);
  67                 }
  68
  69                 if (storePrivate->cached_removals == NULL) {
  70                         storePrivate->cached_removals = CFArrayCreateMutable(NULL,
  71                                                                              0,
  72                                                                              &kCFTypeArrayCallBacks);
  73                 }
  74
  75                 if (!CFArrayContainsValue(storePrivate->cached_removals,
  76                                           CFRangeMake(0, CFArrayGetCount(storePrivate->cached_removals)),
  77                                           key)) {
  78                         CFArrayAppendValue(storePrivate->cached_removals, key);
  79                 }
  80
  81                 return TRUE;
  82         }
  83
  84         /* serialize the key */
  85         if (!_SCSerializeString(key, &utfKey, (void **)&myKeyRef, &myKeyLen)) {
  86                 _SCErrorSet(kSCStatusFailed);
  87                 return FALSE;
  88         }
  89
  90     retry :
  91
  92         /* send the key to the server */
  93         status = configremove(storePrivate->server,
  94                               myKeyRef,
  95                               (mach_msg_type_number_t)myKeyLen,
  96                               (int *)&sc_status);
  97
  98         if (__SCDynamicStoreCheckRetryAndHandleError(store,
  99                                                      status,
 100                                                      &sc_status,
 101                                                      "SCDynamicStoreRemoveValue configremove()")) {
 102                 goto retry;
 103         }
 104
 105         /* clean up */
 106         CFRelease(utfKey);
 107
 108         if (sc_status != kSCStatusOK) {
 109                 _SCErrorSet(sc_status);
 110                 return FALSE;
 111         }
 112
 113         return TRUE;
 114 }