configd.tproj/_configtouch.c

   1 /*
   2  * Copyright (c) 2000-2003 Apple Computer, 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;
  43         CFDataRef                       value;
  44
  45         if (_configd_verbose) {
  46                 SCLog(TRUE, LOG_DEBUG, CFSTR("__SCDynamicStoreTouchValue:"));
  47                 SCLog(TRUE, LOG_DEBUG, CFSTR("  key = %@"), key);
  48         }
  49
  50         if (!store || (storePrivate->server == MACH_PORT_NULL)) {
  51                 return kSCStatusNoStoreSession; /* you must have an open session to play */
  52         }
  53
  54         if (_configd_trace) {
  55                 SCTrace(TRUE, _configd_trace, CFSTR("touch   : %5d : %@\n"), storePrivate->server, key);
  56         }
  57
  58         /*
  59          * 1. Ensure that we hold the lock.
  60          */
  61         sc_status = __SCDynamicStoreLock(store, TRUE);
  62         if (sc_status != kSCStatusOK) {
  63                 return sc_status;
  64         }
  65
  66         /*
  67          * 2. Grab the current (or establish a new) store entry for this key.
  68          */
  69         sc_status = __SCDynamicStoreCopyValue(store, key, &value, TRUE);
  70         switch (sc_status) {
  71                 case kSCStatusNoKey : {
  72                         CFDateRef       now;
  73
  74                         /* store entry does not exist, create */
  75
  76                         now = CFDateCreate(NULL, CFAbsoluteTimeGetCurrent());
  77                         SCLog(_configd_verbose, LOG_DEBUG, CFSTR("  new time stamp = %@"), now);
  78                         (void) _SCSerialize(now, &value, NULL, NULL);
  79                         CFRelease(now);
  80                         break;
  81                 }
  82
  83                 case kSCStatusOK : {
  84                         CFDateRef       now;
  85
  86                         /* store entry exists */
  87
  88                         (void) _SCUnserialize((CFPropertyListRef *)&now, value, NULL, NULL);
  89                         if (isA_CFDate(now)) {
  90                                 /* the value is a CFDate, update the time stamp */
  91                                 CFRelease(now);
  92                                 CFRelease(value);
  93                                 now = CFDateCreate(NULL, CFAbsoluteTimeGetCurrent());
  94                                 SCLog(_configd_verbose, LOG_DEBUG, CFSTR("  new time stamp = %@"), now);
  95                                 (void) _SCSerialize(now, &value, NULL, NULL);
  96                         } /* else, we'll just save the data (again) to bump the instance */
  97                         CFRelease(now);
  98
  99                         break;
 100                 }
 101                 default :
 102                         SCLog(_configd_verbose, LOG_DEBUG, CFSTR("  __SCDynamicStoreCopyValue(): %s"), SCErrorString(sc_status));
 103                         goto done;
 104         }
 105
 106         sc_status = __SCDynamicStoreSetValue(store, key, value, TRUE);
 107         CFRelease(value);
 108
 109     done :
 110
 111         /*
 112          * 8. Release our lock.
 113          */
 114         __SCDynamicStoreUnlock(store, TRUE);
 115
 116         return kSCStatusOK;
 117 }
 118
 119
 120 __private_extern__
 121 kern_return_t
 122 _configtouch(mach_port_t                server,
 123              xmlData_t                  keyRef,         /* raw XML bytes */
 124              mach_msg_type_number_t     keyLen,
 125              int                        *sc_status
 126 )
 127 {
 128         serverSessionRef        mySession = getSession(server);
 129         CFStringRef             key;            /* key  (un-serialized) */
 130
 131         if (_configd_verbose) {
 132                 SCLog(TRUE, LOG_DEBUG, CFSTR("Touch key in configuration database."));
 133                 SCLog(TRUE, LOG_DEBUG, CFSTR("  server = %d"), server);
 134         }
 135
 136         /* un-serialize the key */
 137         if (!_SCUnserializeString(&key, NULL, (void *)keyRef, keyLen)) {
 138                 *sc_status = kSCStatusFailed;
 139                 return KERN_SUCCESS;
 140         }
 141
 142         if (!isA_CFString(key)) {
 143                 *sc_status = kSCStatusInvalidArgument;
 144                 CFRelease(key);
 145                 return KERN_SUCCESS;
 146         }
 147
 148         if (!mySession) {
 149                 *sc_status = kSCStatusNoStoreSession;   /* you must have an open session to play */
 150                 CFRelease(key);
 151                 return KERN_SUCCESS;
 152         }
 153
 154         *sc_status = __SCDynamicStoreTouchValue(mySession->store, key);
 155         CFRelease(key);
 156
 157         return KERN_SUCCESS;
 158 }