Security-222.tar.gz

[apple/security.git] / SecurityServer / sstransit.h

diff --git a/SecurityServer/sstransit.h b/SecurityServer/sstransit.h
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-/*
- * Copyright (c) 2000-2001 Apple Computer, Inc. All Rights Reserved.
- * 
- * The contents of this file constitute Original Code as defined in and are
- * subject to the Apple Public Source License Version 1.2 (the 'License').
- * You may not use this file except in compliance with the License. Please obtain
- * a copy of the License at http://www.apple.com/publicsource and read it before
- * using this file.
- * 
- * This 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.
- */
-
-
-//
-// sstransit - SecurityServer client library transition code.
-//
-// These are the functions that implement CssmClient methods in terms of
-// MIG IPC client calls, plus their supporting machinery.
-//
-// WARNING! HERE BE DRAGONS!
-// This code involves moderately arcane magic including (but not limited to)
-// dancing macros paired off with self-maintaining stack objects. Don't take
-// anything for granted! Be very afraid of ALL-CAPS names. Your best bet is
-// probably to stick with the existing patterns.
-//
-#ifndef _H_SSTRANSIT
-#define _H_SSTRANSIT
-
-#include "ssclient.h"
-#include <Security/mach++.h>
-#include <Security/cssmwalkers.h>
-#include <Security/AuthorizationWalkers.h>
-#include "ucsp.h"
-
-namespace Security
-{
-
-// stock leading argument profile used by all calls
-#define UCSP_ARGS      mGlobal().serverPort, mGlobal().thread().replyPort, &rcode
-
-// IPC/IPCN wrap the actual Mach IPC call. IPC also activates the connection first
-#define IPCN(statement) \
-       { CSSM_RETURN rcode; check(statement); if (rcode != CSSM_OK) CssmError::throwMe(rcode); }
-#define IPC(statement) { activate(); IPCN(statement); }
-#define IPCKEY(statement, key, tag) \
-{ \
-       activate(); \
-       CSSM_RETURN rcode; \
-       for (bool retried = false;; retried = true) \
-       { \
-               check(statement); \
-               if (retried || rcode != CSSMERR_CSP_APPLE_ADD_APPLICATION_ACL_SUBJECT) \
-                       break; \
-               addApplicationAclSubject(key, tag); \
-       } \
-       if (rcode != CSSM_OK) \
-               CssmError::throwMe(rcode); \
-}
-
-// pass mandatory or optional CssmData arguments into an IPC call
-#define DATA(arg)                      arg.data(), arg.length()
-#define OPTIONALDATA(arg)      (arg ? arg->data() : NULL), (arg ? arg->length() : 0)
-
-// pass structured arguments in/out of IPC calls. See "data walkers" for details
-#define COPY(copy)                     copy, copy.length(), copy
-#define COPY_OUT(copy)         &copy, &copy##Length, &copy##Base
-#define COPY_OUT_DECL(type,name) type *name, *name##Base; mach_msg_type_number_t name##Length
-
-
-//
-// DataOutput manages an output CssmData argument.
-//
-class DataOutput {
-public:
-       DataOutput(CssmData &arg, CssmAllocator &alloc)
-               : argument(arg), allocator(alloc) { mData = NULL; mLength = 0; }
-       ~DataOutput();
-       
-       void **data() { return &mData; }
-       mach_msg_type_number_t *length() { return &mLength; }
-       
-       CssmData &argument;
-       CssmAllocator &allocator;
-
-private:
-       void *mData;
-       mach_msg_type_number_t mLength;
-};
-
-
-//
-// Bundle up an AccessCredentials meant for a database, parsing it for
-// "special" samples that need extra evidence to be passed along.
-//
-class DatabaseAccessCredentials : public Copier<AccessCredentials> {
-public:
-       DatabaseAccessCredentials(const AccessCredentials *creds, CssmAllocator &alloc);
-
-private:
-       void mapKeySample(CSSM_CSP_HANDLE &cspHandle, CssmKey &key);
-};
-
-
-//
-// Bundle up a Context for IPC transmission
-//
-class SendContext {
-public:
-       SendContext(const Context &ctx);
-       ~SendContext() { CssmAllocator::standard().free(attributes); }
-       
-       const Context &context;
-       CSSM_CONTEXT_ATTRIBUTE *attributes;
-       size_t attributeSize;
-};
-
-#define CONTEXT(ctx)   ctx.context, ctx.attributes, ctx.attributes, ctx.attributeSize
-
-} // end namespace Security
-
-#endif //_H_SSTRANSIT