SystemConfiguration.fproj/SCDNotifierRemove.c

   1 /*
   2  * Copyright (c) 2000-2005, 2009, 2010 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 <mach/mach.h>
  35 #include <mach/mach_error.h>
  36
  37 #include <SystemConfiguration/SystemConfiguration.h>
  38 #include <SystemConfiguration/SCPrivate.h>
  39 #include "SCDynamicStoreInternal.h"
  40 #include "config.h"             /* MiG generated file */
  41
  42 static void
  43 removeKey(CFMutableArrayRef keys, CFStringRef key)
  44 {
  45         CFIndex i;
  46         CFIndex n;
  47
  48         if (keys == NULL) {
  49                 /* if no keys */
  50                 return;
  51         }
  52
  53         n = CFArrayGetCount(keys);
  54         i = CFArrayGetFirstIndexOfValue(keys, CFRangeMake(0, n), key);
  55         if (i == kCFNotFound) {
  56                 /* if key not in list */
  57         }
  58
  59         /* remove key from list */
  60         CFArrayRemoveValueAtIndex(keys, i);
  61         return;
  62 }
  63
  64
  65 Boolean
  66 SCDynamicStoreRemoveWatchedKey(SCDynamicStoreRef store, CFStringRef key, Boolean isRegex)
  67 {
  68         SCDynamicStorePrivateRef        storePrivate = (SCDynamicStorePrivateRef)store;
  69         kern_return_t                   status;
  70         CFDataRef                       utfKey;         /* serialized key */
  71         xmlData_t                       myKeyRef;
  72         CFIndex                         myKeyLen;
  73         int                             sc_status;
  74
  75         if (store == NULL) {
  76                 /* sorry, you must provide a session */
  77                 _SCErrorSet(kSCStatusNoStoreSession);
  78                 return FALSE;
  79         }
  80
  81         if (storePrivate->server == MACH_PORT_NULL) {
  82                 /* sorry, you must have an open session to play */
  83                 _SCErrorSet(kSCStatusNoStoreServer);
  84                 return FALSE;
  85         }
  86
  87         /* serialize the key */
  88         if (!_SCSerializeString(key, &utfKey, (void **)&myKeyRef, &myKeyLen)) {
  89                 _SCErrorSet(kSCStatusFailed);
  90                 return FALSE;
  91         }
  92
  93     retry :
  94
  95         /* send the key to the server */
  96         status = notifyremove(storePrivate->server,
  97                               myKeyRef,
  98                               myKeyLen,
  99                               isRegex,
 100                               (int *)&sc_status);
 101
 102         if (status != KERN_SUCCESS) {
 103                 if ((status == MACH_SEND_INVALID_DEST) || (status == MIG_SERVER_DIED)) {
 104                         /* the server's gone and our session port's dead, remove the dead name right */
 105                         (void) mach_port_deallocate(mach_task_self(), storePrivate->server);
 106                 } else {
 107                         /* we got an unexpected error, leave the [session] port alone */
 108                         SCLog(TRUE, LOG_ERR, CFSTR("SCDynamicStoreRemoveWatchedKey notifyremove(): %s"), mach_error_string(status));
 109                 }
 110                 storePrivate->server = MACH_PORT_NULL;
 111                 if ((status == MACH_SEND_INVALID_DEST) || (status == MIG_SERVER_DIED)) {
 112                         if (__SCDynamicStoreReconnect(store)) {
 113                                 goto retry;
 114                         }
 115                 }
 116                 sc_status = status;
 117         }
 118
 119         /* clean up */
 120         CFRelease(utfKey);
 121
 122         if (sc_status != kSCStatusOK) {
 123                 _SCErrorSet(sc_status);
 124                 return FALSE;
 125         }
 126
 127         if (isRegex) {
 128                 removeKey(storePrivate->patterns, key);
 129         } else {
 130                 removeKey(storePrivate->keys, key);
 131         }
 132         return TRUE;
 133 }