libsecurity_codesigning/lib/policyengine.h

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