SystemConfiguration.fproj/SCDNotifierRemove.c

   1 /*
   2  * Copyright (c) 2000-2005, 2009-2011, 2013, 2016, 2017 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 static void
  38 removeKey(CFMutableArrayRef keys, CFStringRef key)
  39 {
  40         CFIndex i;
  41         CFIndex n;
  42
  43         if (keys == NULL) {
  44                 /* if no keys */
  45                 return;
  46         }
  47
  48         n = CFArrayGetCount(keys);
  49         i = CFArrayGetFirstIndexOfValue(keys, CFRangeMake(0, n), key);
  50         if (i == kCFNotFound) {
  51                 /* if key not in list */
  52         }
  53
  54         /* remove key from list */
  55         CFArrayRemoveValueAtIndex(keys, i);
  56         return;
  57 }
  58
  59
  60 Boolean
  61 SCDynamicStoreRemoveWatchedKey(SCDynamicStoreRef store, CFStringRef key, Boolean isRegex)
  62 {
  63         SCDynamicStorePrivateRef        storePrivate = (SCDynamicStorePrivateRef)store;
  64         kern_return_t                   status;
  65         CFDataRef                       utfKey;         /* serialized key */
  66         xmlData_t                       myKeyRef;
  67         CFIndex                         myKeyLen;
  68         int                             sc_status;
  69
  70         if (store == NULL) {
  71                 /* sorry, you must provide a session */
  72                 _SCErrorSet(kSCStatusNoStoreSession);
  73                 return FALSE;
  74         }
  75
  76         if (storePrivate->server == MACH_PORT_NULL) {
  77                 /* sorry, you must have an open session to play */
  78                 _SCErrorSet(kSCStatusNoStoreServer);
  79                 return FALSE;
  80         }
  81
  82         /* serialize the key */
  83         if (!_SCSerializeString(key, &utfKey, (void **)&myKeyRef, &myKeyLen)) {
  84                 _SCErrorSet(kSCStatusFailed);
  85                 return FALSE;
  86         }
  87
  88 #ifdef  VERBOSE_ACTIVITY_LOGGING
  89         os_activity_scope(storePrivate->activity);
  90 #endif  // VERBOSE_ACTIVITY_LOGGING
  91
  92     retry :
  93
  94         /* send the key to the server */
  95         status = notifyremove(storePrivate->server,
  96                               myKeyRef,
  97                               (mach_msg_type_number_t)myKeyLen,
  98                               isRegex,
  99                               (int *)&sc_status);
 100
 101         if (__SCDynamicStoreCheckRetryAndHandleError(store,
 102                                                      status,
 103                                                      &sc_status,
 104                                                      "SCDynamicStoreRemoveWatchedKey notifyremove()")) {
 105                 goto retry;
 106         }
 107
 108         /* clean up */
 109         CFRelease(utfKey);
 110
 111         if (sc_status != kSCStatusOK) {
 112                 _SCErrorSet(sc_status);
 113                 return FALSE;
 114         }
 115
 116         if (isRegex) {
 117                 removeKey(storePrivate->patterns, key);
 118         } else {
 119                 removeKey(storePrivate->keys, key);
 120         }
 121         return TRUE;
 122 }