configd.tproj/_configtouch.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  * June 1, 2001                 Allan Nathanson <ajn@apple.com>
  27  * - public API conversion
  28  *
  29  * June 20, 2000                Allan Nathanson <ajn@apple.com>
  30  * - initial revision
  31  */
  32
  33 #include "configd.h"
  34 #include "session.h"
  35
  36 int
  37 __SCDynamicStoreTouchValue(SCDynamicStoreRef store, CFStringRef key)
  38 {
  39         SCDynamicStorePrivateRef        storePrivate    = (SCDynamicStorePrivateRef)store;
  40         int                             sc_status;
  41         Boolean                         newValue        = FALSE;
  42         CFPropertyListRef               value;
  43
  44         SCLog(_configd_verbose, LOG_DEBUG, CFSTR("__SCDynamicStoreTouchValue:"));
  45         SCLog(_configd_verbose, LOG_DEBUG, CFSTR("  key = %@"), key);
  46
  47         if (!store || (storePrivate->server == MACH_PORT_NULL)) {
  48                 return kSCStatusNoStoreSession; /* you must have an open session to play */
  49         }
  50
  51         /*
  52          * 1. Ensure that we hold the lock.
  53          */
  54         sc_status = __SCDynamicStoreLock(store, TRUE);
  55         if (sc_status != kSCStatusOK) {
  56                 return sc_status;
  57         }
  58
  59         /*
  60          * 2. Grab the current (or establish a new) store entry for this key.
  61          */
  62         sc_status = __SCDynamicStoreCopyValue(store, key, &value);
  63         switch (sc_status) {
  64                 case kSCStatusNoKey :
  65                         /* store entry does not exist, create */
  66                         value    = CFDateCreate(NULL, CFAbsoluteTimeGetCurrent());
  67                         newValue = TRUE;
  68                         SCLog(_configd_verbose, LOG_DEBUG, CFSTR("  new time stamp = %@"), value);
  69                         break;
  70
  71                 case kSCStatusOK :
  72                         /* store entry exists */
  73                         if (isA_CFDate(value)) {
  74                                 /* the value is a CFDate, update the time stamp */
  75                                 CFRelease(value);
  76                                 value = CFDateCreate(NULL, CFAbsoluteTimeGetCurrent());
  77                                 newValue = TRUE;
  78                                 SCLog(_configd_verbose, LOG_DEBUG, CFSTR("  new time stamp = %@"), value);
  79                         } /* else, we'll just save the data (again) to bump the instance */
  80                         break;
  81
  82                 default :
  83                         SCLog(_configd_verbose, LOG_DEBUG, CFSTR("  __SCDynamicStoreCopyValue(): %s"), SCErrorString(sc_status));
  84                         goto done;
  85         }
  86
  87         sc_status = __SCDynamicStoreSetValue(store, key, value);
  88
  89         if (newValue) {
  90                 CFRelease(value);
  91         }
  92
  93     done :
  94
  95         /*
  96          * 8. Release our lock.
  97          */
  98         __SCDynamicStoreUnlock(store, TRUE);
  99
 100         return kSCStatusOK;
 101 }
 102
 103
 104 kern_return_t
 105 _configtouch(mach_port_t                server,
 106              xmlData_t                  keyRef,         /* raw XML bytes */
 107              mach_msg_type_number_t     keyLen,
 108              int                        *sc_status
 109 )
 110 {
 111         serverSessionRef        mySession = getSession(server);
 112         CFStringRef             key;            /* key  (un-serialized) */
 113
 114         SCLog(_configd_verbose, LOG_DEBUG, CFSTR("Touch key in configuration database."));
 115         SCLog(_configd_verbose, LOG_DEBUG, CFSTR("  server = %d"), server);
 116
 117         /* un-serialize the key */
 118         if (!_SCUnserialize((CFPropertyListRef *)&key, (void *)keyRef, keyLen)) {
 119                 *sc_status = kSCStatusFailed;
 120                 return KERN_SUCCESS;
 121         }
 122
 123         if (!isA_CFString(key)) {
 124                 CFRelease(key);
 125                 *sc_status = kSCStatusInvalidArgument;
 126                 return KERN_SUCCESS;
 127         }
 128
 129         *sc_status = __SCDynamicStoreTouchValue(mySession->store, key);
 130         CFRelease(key);
 131
 132         return KERN_SUCCESS;
 133 }