OSX/libsecurity_translocate/lib/SecTranslocateInterface.cpp

   1 /*
   2  * Copyright (c) 2016 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 #include <exception>
  25 #include <dispatch/dispatch.h>
  26
  27 #include <security_utilities/unix++.h>
  28 #include <security_utilities/logging.h>
  29
  30 #include "SecTranslocateInterface.hpp"
  31 #include "SecTranslocateServer.hpp"
  32 #include "SecTranslocateClient.hpp"
  33
  34 namespace Security {
  35 namespace SecTranslocate {
  36
  37 using namespace std;
  38
  39 Translocator* getTranslocator(bool isServer)
  40 {
  41     static dispatch_once_t initialized;
  42     static Translocator* me = NULL;
  43     static dispatch_queue_t q;
  44     __block exception_ptr exception(0);
  45
  46     if(isServer && me)
  47     {
  48         Syslog::critical("SecTranslocate: getTranslocator, asked for server but previously intialized as client");
  49         UnixError::throwMe(EINVAL);
  50     }
  51
  52     dispatch_once(&initialized, ^{
  53         try
  54         {
  55             q = dispatch_queue_create(isServer?"com.apple.security.translocate":"com.apple.security.translocate-client", DISPATCH_QUEUE_SERIAL);
  56             if(q == NULL)
  57             {
  58                 Syslog::critical("SecTranslocate: getTranslocator, failed to create queue");
  59                 UnixError::throwMe(ENOMEM);
  60             }
  61
  62             if(isServer)
  63             {
  64                 me = new TranslocatorServer(q);
  65             }
  66             else
  67             {
  68                 me = new TranslocatorClient(q);
  69             }
  70         }
  71         catch (...)
  72         {
  73             Syslog::critical("SecTranslocate: error while creating Translocator");
  74             exception = current_exception();
  75         }
  76     });
  77
  78     if (me == NULL)
  79     {
  80         if (exception)
  81         {
  82             rethrow_exception(exception); //we already logged in this case.
  83         }
  84         else
  85         {
  86             Syslog::critical("SecTranslocate: Translocator initialization failed");
  87             UnixError::throwMe(EINVAL);
  88         }
  89     }
  90
  91     return me;
  92 }
  93
  94 } //namespace SecTranslocate
  95 } //namespace Security