1/*
2 * Copyright (c) 2011-2012 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#ifndef _H_POLICYENGINE
24#define _H_POLICYENGINE
25
26#include "SecAssessment.h"
27#include "opaquewhitelist.h"
28#include "policydb.h"
29#include <security_utilities/globalizer.h>
30#include <security_utilities/cfutilities.h>
31#include <security_utilities/hashing.h>
32#include <security_utilities/sqlite++.h>
33#include <CoreFoundation/CoreFoundation.h>
34#include <Security/CodeSigning.h>
35
36namespace Security {
37namespace CodeSigning {
38
39
40typedef uint EngineOperation;
41enum {
42	opInvalid = 0,
43	opEvaluate,
44	opAddAuthority,
45	opRemoveAuthority,
46};
47
48
49class PolicyEngine : public PolicyDatabase {
50public:
51	PolicyEngine();
52	virtual ~PolicyEngine();
53
54public:
55	void evaluate(CFURLRef path, AuthorityType type, SecAssessmentFlags flags, CFDictionaryRef context, CFMutableDictionaryRef result);
56
57	CFDictionaryRef update(CFTypeRef target, SecAssessmentFlags flags, CFDictionaryRef context);
58	CFDictionaryRef add(CFTypeRef target, AuthorityType type, SecAssessmentFlags flags, CFDictionaryRef context);
59	CFDictionaryRef remove(CFTypeRef target, AuthorityType type, SecAssessmentFlags flags, CFDictionaryRef context);
60	CFDictionaryRef enable(CFTypeRef target, AuthorityType type, SecAssessmentFlags flags, CFDictionaryRef context);
61	CFDictionaryRef disable(CFTypeRef target, AuthorityType type, SecAssessmentFlags flags, CFDictionaryRef context);
62	CFDictionaryRef find(CFTypeRef target, AuthorityType type, SecAssessmentFlags flags, CFDictionaryRef context);
63
64	void recordFailure(CFDictionaryRef info);
65
66public:
67	static void addAuthority(SecAssessmentFlags flags, CFMutableDictionaryRef parent, const char *label, SQLite::int64 row = 0, CFTypeRef cacheInfo = NULL, bool weak = false);
68	static void addToAuthority(CFMutableDictionaryRef parent, CFStringRef key, CFTypeRef value);
69
70private:
71	void evaluateCode(CFURLRef path, AuthorityType type, SecAssessmentFlags flags, CFDictionaryRef context, CFMutableDictionaryRef result, bool handleUnsigned);
72	void evaluateInstall(CFURLRef path, SecAssessmentFlags flags, CFDictionaryRef context, CFMutableDictionaryRef result);
73	void evaluateDocOpen(CFURLRef path, SecAssessmentFlags flags, CFDictionaryRef context, CFMutableDictionaryRef result);
74
75	void evaluateCodeItem(SecStaticCodeRef code, CFURLRef path, AuthorityType type, SecAssessmentFlags flags, bool nested, CFMutableDictionaryRef result);
76	void adjustValidation(SecStaticCodeRef code);
77	bool temporarySigning(SecStaticCodeRef code, AuthorityType type, CFURLRef path, SecAssessmentFlags matchFlags);
78	void normalizeTarget(CFRef<CFTypeRef> &target, AuthorityType type, CFDictionary &context, std::string *signUnsigned);
79
80	void selectRules(SQLite::Statement &action, std::string stanza, std::string table,
81		CFTypeRef inTarget, AuthorityType type, SecAssessmentFlags flags, CFDictionaryRef context, std::string suffix = "");
82	CFDictionaryRef manipulateRules(const std::string &stanza,
83		CFTypeRef target, AuthorityType type, SecAssessmentFlags flags, CFDictionaryRef context);
84
85	void setOrigin(CFArrayRef chain, CFMutableDictionaryRef result);
86
87	void recordOutcome(SecStaticCodeRef code, bool allow, AuthorityType type, double expires, SQLite::int64 authority);
88
89private:
90	OpaqueWhitelist mOpaqueWhitelist;
91};
92
93
94} // end namespace CodeSigning
95} // end namespace Security
96
97#endif //_H_POLICYENGINE
98