OSX/libsecurity_cdsa_plugin/lib/pluginsession.cpp

   1 /*
   2  * Copyright (c) 2000-2001,2011,2014 Apple Inc. All Rights Reserved.
   3  *
   4  * The contents of this file constitute Original Code as defined in and are
   5  * subject to the Apple Public Source License Version 1.2 (the 'License').
   6  * You may not use this file except in compliance with the License. Please obtain
   7  * a copy of the License at http://www.apple.com/publicsource and read it before
   8  * using this file.
   9  *
  10  * This Original Code and all software distributed under the License are
  11  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS
  12  * OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, INCLUDING WITHOUT
  13  * LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
  14  * PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. Please see the License for the
  15  * specific language governing rights and limitations under the License.
  16  */
  17
  18
  19 //
  20 // pluginsession - an attachment session for a CSSM plugin
  21 //
  22 #include <security_cdsa_plugin/pluginsession.h>
  23 #include <security_cdsa_plugin/cssmplugin.h>
  24 #include <security_cdsa_plugin/DLsession.h>
  25
  26
  27 //
  28 // Construct a PluginSession
  29 //
  30 PluginSession::PluginSession(CSSM_MODULE_HANDLE theHandle,
  31                              CssmPlugin &myPlugin,
  32                              const CSSM_VERSION &version,
  33                              uint32 subserviceId,
  34                              CSSM_SERVICE_TYPE subserviceType,
  35                              CSSM_ATTACH_FLAGS attachFlags,
  36                              const CSSM_UPCALLS &inUpcalls)
  37         : HandledObject(theHandle), plugin(myPlugin),
  38           mVersion(version), mSubserviceId(subserviceId),
  39           mSubserviceType(subserviceType), mAttachFlags(attachFlags),
  40           upcalls(inUpcalls)
  41 {
  42 }
  43
  44
  45 //
  46 // Destruction
  47 //
  48 PluginSession::~PluginSession()
  49 {
  50 }
  51
  52
  53 //
  54 // The default implementation of detach() does nothing
  55 //
  56 void PluginSession::detach()
  57 {
  58 }
  59
  60
  61 //
  62 // Allocation management
  63 //
  64 void *PluginSession::malloc(size_t size)
  65 {
  66     if (void *addr = upcalls.malloc_func(handle(), size)) {
  67         return addr;
  68     }
  69     throw std::bad_alloc();
  70 }
  71
  72 void *PluginSession::realloc(void *oldAddr, size_t size)
  73 {
  74     if (void *addr = upcalls.realloc_func(handle(), oldAddr, size)) {
  75         return addr;
  76     }
  77     throw std::bad_alloc();
  78 }
  79
  80
  81 //
  82 // Dispatch callback events through the plugin object.
  83 // Subsystem ID and subservice type default to our own.
  84 //
  85
  86 void PluginSession::sendCallback(CSSM_MODULE_EVENT event,
  87                                  uint32 ssid,
  88                                  CSSM_SERVICE_TYPE serviceType) const
  89 {
  90     plugin.sendCallback(event,
  91                         (ssid == uint32(-1)) ? mSubserviceId : ssid,
  92                         serviceType ? serviceType : mSubserviceType);
  93 }