mDNSMacOS9/mDNSLibrary.c

   1 /* -*- Mode: C; tab-width: 4 -*-
   2  *
   3  * Copyright (c) 2004 Apple Computer, Inc. All rights reserved.
   4  *
   5  * Licensed under the Apache License, Version 2.0 (the "License");
   6  * you may not use this file except in compliance with the License.
   7  * You may obtain a copy of the License at
   8  *
   9  *     http://www.apache.org/licenses/LICENSE-2.0
  10  *
  11  * Unless required by applicable law or agreed to in writing, software
  12  * distributed under the License is distributed on an "AS IS" BASIS,
  13  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  14  * See the License for the specific language governing permissions and
  15  * limitations under the License.
  16  */
  17
  18 // Define the required CFM Shared Library entry and exit points
  19 #include <CodeFragments.h>
  20 #include "mDNSEmbeddedAPI.h"            // Defines the interface to the client layer above
  21 #include "mDNSMacOS9.h"                 // Defines the specific types needed to run mDNS on this platform
  22
  23 mDNS mDNSStorage;
  24 static mDNS_PlatformSupport PlatformSupportStorage;
  25 // Start off with a default cache of 16K (about 100 records)
  26 #define RR_CACHE_SIZE ((16*1024) / sizeof(CacheRecord))
  27 static CacheEntity rrcachestorage[RR_CACHE_SIZE];
  28
  29 mDNSlocal void mDNS_StatusCallback(mDNS *const m, mStatus result)
  30 {
  31     if (result == mStatus_GrowCache)
  32     {
  33         // Allocate another chunk of cache storage
  34         CacheEntity *storage = OTAllocMem(sizeof(CacheEntity) * RR_CACHE_SIZE);
  35         if (storage) mDNS_GrowCache(m, storage, RR_CACHE_SIZE);
  36     }
  37 }
  38
  39 extern pascal OSErr mDNS_CFMInit(const CFragInitBlock *theInitBlock);
  40 pascal OSErr mDNS_CFMInit(const CFragInitBlock *theInitBlock)
  41 {
  42     extern pascal OSErr __initialize(const CFragInitBlock *theInitBlock);
  43     __initialize(theInitBlock); // MUST do this first!
  44     {
  45         mStatus err;
  46         THz oldZone = GetZone();
  47         SetZone(SystemZone());
  48         LogMsg("mDNS/DNS-SD with Macsbug breaks -- do not ship this version to customers");
  49         err = mDNS_Init(&mDNSStorage, &PlatformSupportStorage, rrcachestorage, RR_CACHE_SIZE,
  50                         mDNS_Init_AdvertiseLocalAddresses, mDNS_StatusCallback, mDNS_Init_NoInitCallbackContext);
  51         SetZone(oldZone);
  52         return((OSErr)err);
  53     }
  54 }
  55
  56 extern void mDNS_CFMTerm(void);
  57 void mDNS_CFMTerm(void)
  58 {
  59     extern pascal void __terminate(void);
  60     LogMsg("mDNS_CFMTerm");
  61     mDNS_Close(&mDNSStorage);
  62     __terminate();
  63 }