Security-57031.1.35.tar.gz

[apple/security.git] / Security / libsecurity_codesigning / lib / reqinterp.h

diff --git a/Security/libsecurity_codesigning/lib/reqinterp.h b/Security/libsecurity_codesigning/lib/reqinterp.h
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+/*
+ * Copyright (c) 2006-2007,2011 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@
+ */
+
+//
+// reqinterp - Requirement language (exprOp) interpreter
+//
+#ifndef _H_REQINTERP
+#define _H_REQINTERP
+
+#include <security_codesigning/reqreader.h>
+#include <Security/SecTrustSettings.h>
+#include <security_cdsa_utilities/cssmdata.h>  // CssmOid
+
+namespace Security {
+namespace CodeSigning {
+
+
+//
+// An interpreter for exprForm-type requirements.
+// This is a simple Polish Notation stack evaluator.
+//     
+class Requirement::Interpreter : public Requirement::Reader {  
+public:
+       Interpreter(const Requirement *req, const Context *ctx) : Reader(req), mContext(ctx) { }
+       
+       bool evaluate();
+       
+protected:
+       class Match {
+       public:
+               Match(Interpreter &interp);             // reads match postfix from interp
+               Match(CFStringRef value, MatchOperation op) : mValue(value), mOp(op) { } // explicit
+               Match() : mValue(NULL), mOp(matchExists) { } // explict test for presence
+               bool operator () (CFTypeRef candidate) const; // match to candidate
+
+       protected:
+               bool inequality(CFTypeRef candidate, CFStringCompareFlags flags, CFComparisonResult outcome, bool negate) const;
+               
+       private:
+               CFCopyRef<CFStringRef> mValue;  // match value
+               MatchOperation mOp;                             // type of match
+       };
+       
+protected:
+       bool infoKeyValue(const std::string &key, const Match &match);
+       bool entitlementValue(const std::string &key, const Match &match);
+       bool certFieldValue(const string &key, const Match &match, SecCertificateRef cert);
+       bool certFieldGeneric(const string &key, const Match &match, SecCertificateRef cert);
+       bool certFieldGeneric(const CssmOid &oid, const Match &match, SecCertificateRef cert);
+       bool certFieldPolicy(const string &key, const Match &match, SecCertificateRef cert);
+       bool certFieldPolicy(const CssmOid &oid, const Match &match, SecCertificateRef cert);
+       bool verifyAnchor(SecCertificateRef cert, const unsigned char *digest);
+       bool appleSigned();
+       bool appleAnchored();
+       bool trustedCerts();
+       bool trustedCert(int slot);
+       
+       static SecTrustSettingsResult trustSetting(SecCertificateRef cert, bool isAnchor);
+       
+private:
+       const Context * const mContext;
+};
+
+
+}      // CodeSigning
+}      // Security
+
+#endif //_H_REQINTERP