configd.tproj/_configtouch.c

   1 /*
   2  * Copyright (c) 2000-2003 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
   7  *
   8  * This file contains Original Code and/or Modifications of Original Code
   9  * as defined in and that are subject to the Apple Public Source License
  10  * Version 2.0 (the 'License'). You may not use this file except in
  11  * compliance with the License. Please obtain a copy of the License at
  12  * http://www.opensource.apple.com/apsl/ and read it before using this
  13  * file.
  14  *
  15  * The Original Code and all software distributed under the License are
  16  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  17  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  18  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  20  * Please see the License for the specific language governing rights and
  21  * limitations under the License.
  22  *
  23  * @APPLE_LICENSE_HEADER_END@
  24  */
  25
  26 /*
  27  * Modification History
  28  *
  29  * June 1, 2001                 Allan Nathanson <ajn@apple.com>
  30  * - public API conversion
  31  *
  32  * June 20, 2000                Allan Nathanson <ajn@apple.com>
  33  * - initial revision
  34  */
  35
  36 #include "configd.h"
  37 #include "session.h"
  38
  39 __private_extern__
  40 int
  41 __SCDynamicStoreTouchValue(SCDynamicStoreRef store, CFStringRef key)
  42 {
  43         SCDynamicStorePrivateRef        storePrivate    = (SCDynamicStorePrivateRef)store;
  44         int                             sc_status;
  45         CFDataRef                       value;
  46
  47         if (_configd_verbose) {
  48                 SCLog(TRUE, LOG_DEBUG, CFSTR("__SCDynamicStoreTouchValue:"));
  49                 SCLog(TRUE, LOG_DEBUG, CFSTR("  key = %@"), key);
  50         }
  51
  52         if (!store || (storePrivate->server == MACH_PORT_NULL)) {
  53                 return kSCStatusNoStoreSession; /* you must have an open session to play */
  54         }
  55
  56         if (_configd_trace) {
  57                 SCTrace(TRUE, _configd_trace, CFSTR("touch   : %5d : %@\n"), storePrivate->server, key);
  58         }
  59
  60         /*
  61          * 1. Ensure that we hold the lock.
  62          */
  63         sc_status = __SCDynamicStoreLock(store, TRUE);
  64         if (sc_status != kSCStatusOK) {
  65                 return sc_status;
  66         }
  67
  68         /*
  69          * 2. Grab the current (or establish a new) store entry for this key.
  70          */
  71         sc_status = __SCDynamicStoreCopyValue(store, key, &value, TRUE);
  72         switch (sc_status) {
  73                 case kSCStatusNoKey : {
  74                         CFDateRef       now;
  75
  76                         /* store entry does not exist, create */
  77
  78                         now = CFDateCreate(NULL, CFAbsoluteTimeGetCurrent());
  79                         SCLog(_configd_verbose, LOG_DEBUG, CFSTR("  new time stamp = %@"), now);
  80                         (void) _SCSerialize(now, &value, NULL, NULL);
  81                         CFRelease(now);
  82                         break;
  83                 }
  84
  85                 case kSCStatusOK : {
  86                         CFDateRef       now;
  87
  88                         /* store entry exists */
  89
  90                         (void) _SCUnserialize((CFPropertyListRef *)&now, value, NULL, NULL);
  91                         if (isA_CFDate(now)) {
  92                                 /* the value is a CFDate, update the time stamp */
  93                                 CFRelease(now);
  94                                 CFRelease(value);
  95                                 now = CFDateCreate(NULL, CFAbsoluteTimeGetCurrent());
  96                                 SCLog(_configd_verbose, LOG_DEBUG, CFSTR("  new time stamp = %@"), now);
  97                                 (void) _SCSerialize(now, &value, NULL, NULL);
  98                         } /* else, we'll just save the data (again) to bump the instance */
  99                         CFRelease(now);
 100
 101                         break;
 102                 }
 103                 default :
 104                         SCLog(_configd_verbose, LOG_DEBUG, CFSTR("  __SCDynamicStoreCopyValue(): %s"), SCErrorString(sc_status));
 105                         goto done;
 106         }
 107
 108         sc_status = __SCDynamicStoreSetValue(store, key, value, TRUE);
 109         CFRelease(value);
 110
 111     done :
 112
 113         /*
 114          * 8. Release our lock.
 115          */
 116         __SCDynamicStoreUnlock(store, TRUE);
 117
 118         return kSCStatusOK;
 119 }
 120
 121
 122 __private_extern__
 123 kern_return_t
 124 _configtouch(mach_port_t                server,
 125              xmlData_t                  keyRef,         /* raw XML bytes */
 126              mach_msg_type_number_t     keyLen,
 127              int                        *sc_status
 128 )
 129 {
 130         serverSessionRef        mySession = getSession(server);
 131         CFStringRef             key;            /* key  (un-serialized) */
 132
 133         if (_configd_verbose) {
 134                 SCLog(TRUE, LOG_DEBUG, CFSTR("Touch key in configuration database."));
 135                 SCLog(TRUE, LOG_DEBUG, CFSTR("  server = %d"), server);
 136         }
 137
 138         /* un-serialize the key */
 139         if (!_SCUnserializeString(&key, NULL, (void *)keyRef, keyLen)) {
 140                 *sc_status = kSCStatusFailed;
 141                 return KERN_SUCCESS;
 142         }
 143
 144         if (!isA_CFString(key)) {
 145                 *sc_status = kSCStatusInvalidArgument;
 146                 CFRelease(key);
 147                 return KERN_SUCCESS;
 148         }
 149
 150         if (!mySession) {
 151                 *sc_status = kSCStatusNoStoreSession;   /* you must have an open session to play */
 152                 CFRelease(key);
 153                 return KERN_SUCCESS;
 154         }
 155
 156         *sc_status = __SCDynamicStoreTouchValue(mySession->store, key);
 157         CFRelease(key);
 158
 159         return KERN_SUCCESS;
 160 }