configd.tproj/_configtouch.c

   1 /*
   2  * Copyright (c) 2000-2004, 2006, 2008, 2009 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  * June 20, 2000                Allan Nathanson <ajn@apple.com>
  31  * - initial revision
  32  */
  33
  34 #include "configd.h"
  35 #include "session.h"
  36
  37 __private_extern__
  38 int
  39 __SCDynamicStoreTouchValue(SCDynamicStoreRef store, CFStringRef key)
  40 {
  41         SCDynamicStorePrivateRef        storePrivate    = (SCDynamicStorePrivateRef)store;
  42         int                             sc_status       = kSCStatusOK;
  43         CFDataRef                       value;
  44
  45         if ((store == NULL) || (storePrivate->server == MACH_PORT_NULL)) {
  46                 return kSCStatusNoStoreSession; /* you must have an open session to play */
  47         }
  48
  49         if (_configd_trace) {
  50                 SCTrace(TRUE, _configd_trace, CFSTR("touch   : %5d : %@\n"), storePrivate->server, key);
  51         }
  52
  53         /*
  54          * 1. Ensure that we hold the lock.
  55          */
  56         sc_status = __SCDynamicStoreLock(store, TRUE);
  57         if (sc_status != kSCStatusOK) {
  58                 return sc_status;
  59         }
  60
  61         /*
  62          * 2. Grab the current (or establish a new) store entry for this key.
  63          */
  64         sc_status = __SCDynamicStoreCopyValue(store, key, &value, TRUE);
  65         switch (sc_status) {
  66                 case kSCStatusNoKey : {
  67                         CFDateRef       now;
  68
  69                         /* store entry does not exist, create */
  70
  71                         now = CFDateCreate(NULL, CFAbsoluteTimeGetCurrent());
  72                         (void) _SCSerialize(now, &value, NULL, NULL);
  73                         CFRelease(now);
  74                         break;
  75                 }
  76
  77                 case kSCStatusOK : {
  78                         CFDateRef       now;
  79
  80                         /* store entry exists */
  81
  82                         (void) _SCUnserialize((CFPropertyListRef *)&now, value, NULL, 0);
  83                         if (isA_CFDate(now)) {
  84                                 /* the value is a CFDate, update the time stamp */
  85                                 CFRelease(now);
  86                                 CFRelease(value);
  87                                 now = CFDateCreate(NULL, CFAbsoluteTimeGetCurrent());
  88                                 (void) _SCSerialize(now, &value, NULL, NULL);
  89                         } /* else, we'll just save the data (again) to bump the instance */
  90                         CFRelease(now);
  91
  92                         break;
  93                 }
  94                 default :
  95                         goto done;
  96         }
  97
  98         sc_status = __SCDynamicStoreSetValue(store, key, value, TRUE);
  99         CFRelease(value);
 100
 101     done :
 102
 103         /*
 104          * 8. Release our lock.
 105          */
 106         __SCDynamicStoreUnlock(store, TRUE);
 107
 108         return sc_status;
 109 }
 110
 111
 112 __private_extern__
 113 kern_return_t
 114 _configtouch(mach_port_t                server,
 115              xmlData_t                  keyRef,         /* raw XML bytes */
 116              mach_msg_type_number_t     keyLen,
 117              int                        *sc_status
 118 )
 119 {
 120         CFStringRef             key             = NULL;         /* key  (un-serialized) */
 121         serverSessionRef        mySession;
 122
 123         /* un-serialize the key */
 124         if (!_SCUnserializeString(&key, NULL, (void *)keyRef, keyLen)) {
 125                 *sc_status = kSCStatusFailed;
 126                 goto done;
 127         }
 128
 129         if (!isA_CFString(key)) {
 130                 *sc_status = kSCStatusInvalidArgument;
 131                 goto done;
 132         }
 133
 134         mySession = getSession(server);
 135         if (mySession == NULL) {
 136                 *sc_status = kSCStatusNoStoreSession;   /* you must have an open session to play */
 137                 goto done;
 138         }
 139
 140         *sc_status = __SCDynamicStoreTouchValue(mySession->store, key);
 141
 142     done :
 143
 144         if (key)        CFRelease(key);
 145         return KERN_SUCCESS;
 146 }