keychain/ckks/CKKSControlProtocol.m

   1 /*
   2  * Copyright (c) 2017 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 #import <Foundation/Foundation.h>
  25
  26 #import "keychain/ckks/CKKSControlProtocol.h"
  27
  28 #if OCTAGON
  29 #import <CloudKit/CloudKit.h>
  30 #import <CloudKit/CloudKit_Private.h>
  31 #import <utilities/debugging.h>
  32 #include <dlfcn.h>
  33
  34 // Weak-link CloudKit, until we can get ckksctl out of base system
  35 static void *cloudKit = NULL;
  36
  37 static void
  38 initCloudKit(void)
  39 {
  40     static dispatch_once_t onceToken;
  41     dispatch_once(&onceToken, ^{
  42         cloudKit = dlopen("/System/Library/Frameworks/CloudKit.framework/CloudKit", RTLD_LAZY);
  43     });
  44 }
  45
  46 static void
  47 getCloudKitSymbol(void **sym, const char *name)
  48 {
  49     initCloudKit();
  50     if (!sym || *sym) {
  51         return;
  52     }
  53     *sym = dlsym(cloudKit, name);
  54     if (*sym == NULL) {
  55         fprintf(stderr, "symbol %s is missing", name);
  56         abort();
  57     }
  58 }
  59 #endif // OCTAGON
  60
  61 NSXPCInterface* CKKSSetupControlProtocol(NSXPCInterface* interface) {
  62 #if OCTAGON
  63     static NSMutableSet *errClasses;
  64
  65     static dispatch_once_t onceToken;
  66     dispatch_once(&onceToken, ^{
  67         __typeof(CKAcceptableValueClasses) *soft_CKAcceptableValueClasses = NULL;
  68         getCloudKitSymbol((void **)&soft_CKAcceptableValueClasses, "CKAcceptableValueClasses");
  69         errClasses = [NSMutableSet setWithSet:soft_CKAcceptableValueClasses()];
  70
  71         char *classes[] = {
  72             "CKPrettyError",
  73             "CKRecordID",
  74             "NSURL",
  75             "NSError"
  76         };
  77
  78         for (unsigned n = 0; n < sizeof(classes)/sizeof(classes[0]); n++) {
  79             Class cls = objc_getClass(classes[n]);
  80             if (cls) {
  81                 [errClasses addObject:cls];
  82             }
  83         }
  84     });
  85
  86     @try {
  87         [interface setClasses:errClasses forSelector:@selector(rpcResetLocal:reply:)                   argumentIndex:0 ofReply:YES];
  88         [interface setClasses:errClasses forSelector:@selector(rpcResetCloudKit:reply:)                argumentIndex:0 ofReply:YES];
  89         [interface setClasses:errClasses forSelector:@selector(rpcResync:reply:)                       argumentIndex:0 ofReply:YES];
  90         [interface setClasses:errClasses forSelector:@selector(rpcStatus:reply:)                       argumentIndex:1 ofReply:YES];
  91         [interface setClasses:errClasses forSelector:@selector(rpcFetchAndProcessChanges:reply:)       argumentIndex:0 ofReply:YES];
  92         [interface setClasses:errClasses forSelector:@selector(rpcFetchAndProcessClassAChanges:reply:) argumentIndex:0 ofReply:YES];
  93         [interface setClasses:errClasses forSelector:@selector(rpcPushOutgoingChanges:reply:)          argumentIndex:0 ofReply:YES];
  94         [interface setClasses:errClasses forSelector:@selector(rpcGetAnalyticsJSONWithReply:)          argumentIndex:1 ofReply:YES];
  95         [interface setClasses:errClasses forSelector:@selector(rpcForceUploadAnalyticsWithReply:)      argumentIndex:1 ofReply:YES];
  96         [interface setClasses:errClasses forSelector:@selector(rpcGetAnalyticsSysdiagnoseWithReply:)   argumentIndex:1 ofReply:YES];
  97     }
  98     @catch(NSException* e) {
  99         secerror("CKKSSetupControlProtocol failed, continuing, but you might crash later: %@", e);
 100 #if DEBUG
 101         @throw e;
 102 #endif
 103     }
 104 #endif
 105
 106     return interface;
 107 }
 108