OSX/libsecurity_keychain/lib/KCEventNotifier.cpp

   1 /*
   2  * Copyright (c) 2000-2004,2011,2014 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  * KCEventNotifier.cpp -- OS X CF Notifier for Keychain Events
  24  */
  25
  26 #include <securityd_client/ssclient.h>
  27 #include "KCEventNotifier.h"
  28 #include "KCExceptions.h"
  29 #include "Keychains.h"
  30
  31 using namespace KeychainCore;
  32
  33 void KCEventNotifier::PostKeychainEvent(SecKeychainEvent whichEvent, const Keychain &keychain, const Item &kcItem)
  34 {
  35         DLDbIdentifier dlDbIdentifier;
  36         PrimaryKey primaryKey;
  37
  38         if (keychain)
  39                 dlDbIdentifier = keychain->dlDbIdentifier();
  40
  41     if (kcItem)
  42                 primaryKey = kcItem->primaryKey();
  43
  44         PostKeychainEvent(whichEvent, dlDbIdentifier, primaryKey);
  45 }
  46
  47
  48 void KCEventNotifier::PostKeychainEvent(SecKeychainEvent whichEvent,
  49                                                                                 const DLDbIdentifier &dlDbIdentifier,
  50                                                                                 const PrimaryKey &primaryKey)
  51 {
  52         NameValueDictionary nvd;
  53
  54         Endian<pid_t> thePid = getpid();
  55         nvd.Insert (new NameValuePair (PID_KEY, CssmData (reinterpret_cast<void*>(&thePid), sizeof (pid_t))));
  56
  57         if (dlDbIdentifier)
  58         {
  59                 NameValueDictionary::MakeNameValueDictionaryFromDLDbIdentifier (dlDbIdentifier, nvd);
  60         }
  61
  62         CssmData* pKey = primaryKey;
  63
  64     if (primaryKey)
  65     {
  66                 nvd.Insert (new NameValuePair (ITEM_KEY, *pKey));
  67     }
  68
  69         // flatten the dictionary
  70         CssmData data;
  71         nvd.Export (data);
  72
  73     /* enforce a maximum size of 16k for notifications */
  74     if (data.length() <= 16384) {
  75         SecurityServer::ClientSession cs (Allocator::standard(), Allocator::standard());
  76         cs.postNotification (SecurityServer::kNotificationDomainDatabase, whichEvent, data);
  77
  78         secinfo("kcnotify", "KCEventNotifier::PostKeychainEvent posted event %u", (unsigned int) whichEvent);
  79     }
  80
  81         free (data.data ());
  82 }