1/*
2 * Copyright (c) 2009 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//
25// slcrep - DiskRep representing the Mac OS Shared Library Cache
26//
27#ifndef _H_SLCREP
28#define _H_SLCREP
29
30#include "singlediskrep.h"
31#include "sigblob.h"
32#include <security_utilities/unix++.h>
33#include <security_utilities/macho++.h>
34#include <security_utilities/dyldcache.h>
35
36namespace Security {
37namespace CodeSigning {
38
39
40//
41// DYLDCacheRep implements the on-disk format for the Mac OS X
42// Shared Library Cache, which coalesces a set of system libraries
43// and frameworks into one big (mappable) code blob in the sky.
44//
45class DYLDCacheRep : public SingleDiskRep {
46public:
47	DYLDCacheRep(const Context *ctx = NULL);
48	DYLDCacheRep(const char *path);
49
50	CFDataRef component(CodeDirectory::SpecialSlot slot);
51	size_t pageSize(const SigningContext &ctx);
52	size_t signingLimit();
53	std::string format();
54
55	static bool candidate(UnixPlusPlus::FileDesc &fd);
56
57public:
58	static CFDataRef identificationFor(MachO *macho);
59
60public:
61	DiskRep::Writer *writer();
62	class Writer;
63	friend class Writer;
64
65private:
66	void setup();
67
68private:
69	DYLDCache mCache;
70	const EmbeddedSignatureBlob *mSigningData;	// pointer to signature SuperBlob (in mapped memory)
71};
72
73
74//
75// The write side of a FileDiskRep
76//
77class DYLDCacheRep::Writer : public SingleDiskRep::Writer, private EmbeddedSignatureBlob::Maker {
78	friend class FileDiskRep;
79public:
80	Writer(DYLDCacheRep *r) : SingleDiskRep::Writer(r, writerNoGlobal), rep(r), mSigningData(NULL) { }
81	void component(CodeDirectory::SpecialSlot slot, CFDataRef data);
82	void flush();
83	void addDiscretionary(CodeDirectory::Builder &builder);
84
85private:
86	DYLDCacheRep *rep;
87	EmbeddedSignatureBlob *mSigningData;
88};
89
90
91} // end namespace CodeSigning
92} // end namespace Security
93
94#endif // !_H_SLCREP
95