CKKSControlProtocol.m   [plain text]

/*
* Copyright (c) 2017 Apple Inc. All Rights Reserved.
*
* @APPLE_LICENSE_HEADER_START@
*
* This file contains Original Code and/or Modifications of Original Code
* as defined in and that are subject to the Apple Public Source License
* Version 2.0 (the 'License'). You may not use this file except in
* compliance with the License. Please obtain a copy of the License at
* http://www.opensource.apple.com/apsl/ and read it before using this
* file.
*
* The Original Code and all software distributed under the License are
* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
* Please see the License for the specific language governing rights and
* limitations under the License.
*
* @APPLE_LICENSE_HEADER_END@
*/

#import <Foundation/Foundation.h>

#import "keychain/ckks/CKKSControlProtocol.h"

#if OCTAGON
#import <CloudKit/CloudKit.h>
#import <CloudKit/CloudKit_Private.h>
#import <objc/runtime.h>
#import "utilities/debugging.h"
#include <dlfcn.h>
#import <Security/SecXPCHelper.h>

// Weak-link CloudKit, until we can get ckksctl out of base system
static void *cloudKit = NULL;

static void
initCloudKit(void)
{
static dispatch_once_t onceToken;
dispatch_once(&onceToken, ^{
cloudKit = dlopen("/System/Library/Frameworks/CloudKit.framework/CloudKit", RTLD_LAZY);
});
}

static void
getCloudKitSymbol(void **sym, const char *name)
{
initCloudKit();
if (!sym || *sym) {
return;
}
*sym = dlsym(cloudKit, name);
if (*sym == NULL) {
fprintf(stderr, "symbol %s is missing", name);
abort();
}
}
#endif // OCTAGON

NSXPCInterface* CKKSSetupControlProtocol(NSXPCInterface* interface) {
#if OCTAGON
static NSMutableSet *errClasses;

static dispatch_once_t onceToken;
dispatch_once(&onceToken, ^{
__typeof(CKAcceptableValueClasses) *soft_CKAcceptableValueClasses = NULL;
getCloudKitSymbol((void **)&soft_CKAcceptableValueClasses, "CKAcceptableValueClasses");
errClasses = [NSMutableSet setWithSet:soft_CKAcceptableValueClasses()];
[errClasses unionSet:[SecXPCHelper safeErrorClasses]];
});

@try {
[interface setClasses:errClasses forSelector:@selector(rpcResetLocal:reply:) argumentIndex:0 ofReply:YES];
[interface setClasses:errClasses forSelector:@selector(rpcResetCloudKit:reason:reply:) argumentIndex:0 ofReply:YES];
[interface setClasses:errClasses forSelector:@selector(rpcResync:reply:) argumentIndex:0 ofReply:YES];
[interface setClasses:errClasses forSelector:@selector(rpcResyncLocal:reply:) argumentIndex:0 ofReply:YES];
[interface setClasses:errClasses forSelector:@selector(rpcStatus:reply:) argumentIndex:1 ofReply:YES];
[interface setClasses:errClasses forSelector:@selector(rpcFastStatus:reply:) argumentIndex:1 ofReply:YES];
[interface setClasses:errClasses forSelector:@selector(rpcFetchAndProcessChanges:reply:) argumentIndex:0 ofReply:YES];
[interface setClasses:errClasses forSelector:@selector(rpcFetchAndProcessClassAChanges:reply:) argumentIndex:0 ofReply:YES];
[interface setClasses:errClasses forSelector:@selector(rpcPushOutgoingChanges:reply:) argumentIndex:0 ofReply:YES];
[interface setClasses:errClasses forSelector:@selector(rpcGetCKDeviceIDWithReply:) argumentIndex:0 ofReply:YES];
[interface setClasses:errClasses forSelector:@selector(rpcCKMetric:attributes:reply:) argumentIndex:0 ofReply:YES];
}

@catch(NSException* e) {
secerror("CKKSSetupControlProtocol failed, continuing, but you might crash later: %@", e);
@throw e;
}
#endif

return interface;
}