Security-57031.1.35.tar.gz

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

diff --git a/Security/libsecurity_codesigning/lib/resources.h b/Security/libsecurity_codesigning/lib/resources.h
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+/*
+ * Copyright (c) 2006-2012,2014 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@
+ */
+
+//
+// resource directory construction and verification
+//
+#ifndef _H_RSIGN
+#define _H_RSIGN
+
+#include "codedirectory.h"
+#include <security_utilities/utilities.h>
+#include <security_utilities/cfutilities.h>
+#include <security_utilities/hashing.h>
+#include "regex.h"
+#include <CoreFoundation/CoreFoundation.h>
+#include <vector>
+#include <fts.h>
+
+namespace Security {
+namespace CodeSigning {
+
+
+//
+// The builder of ResourceDirectories.
+//
+// Note that this *is* a ResourceEnumerator, which can enumerate
+// its source directory once (only).
+//
+class ResourceBuilder {
+       NOCOPY(ResourceBuilder)
+public:
+       ResourceBuilder(const std::string &root, const std::string &relBase,
+               CFDictionaryRef rulesDict, CodeDirectory::HashAlgorithm hashType, bool strict, const MacOSErrorSet& toleratedErrors);
+       ~ResourceBuilder();
+
+       enum {
+               optional = 0x01,                                // may be absent at runtime
+               omitted = 0x02,                                 // do not seal even if present
+               nested = 0x04,                                  // nested code (recursively signed)
+               exclusion = 0x10,                               // overriding exclusion (stop looking)
+               top = 0x20,                                             // special top directory handling
+       };
+       
+       typedef unsigned int Weight;
+       
+public:
+       class Rule : private regex_t {
+       public:
+               Rule(const std::string &pattern, Weight weight, uint32_t flags);
+               ~Rule();
+               
+               bool match(const char *s) const;
+               
+               const Weight weight;
+               const uint32_t flags;
+               std::string source;
+       };
+       void addRule(Rule *rule) { mRules.push_back(rule); }
+       void addExclusion(const std::string &pattern) { mRules.insert(mRules.begin(), new Rule(pattern, 0, exclusion)); }
+
+       static std::string escapeRE(const std::string &s);
+       
+       typedef void (^Scanner)(FTSENT *ent, uint32_t flags, const char *relpath, Rule *rule);
+       void scan(Scanner next);
+       bool includes(string path) const;
+       Rule *findRule(string path) const;
+
+       DynamicHash *getHash() const { return CodeDirectory::hashFor(this->mHashType); }
+       CFDataRef hashFile(const char *path) const;
+       
+       CFDictionaryRef rules() const { return mRawRules; }
+
+protected:
+       void addRule(CFTypeRef key, CFTypeRef value);
+       
+private:
+       std::string mRoot, mRelBase;
+       FTS *mFTS;
+       CFCopyRef<CFDictionaryRef> mRawRules;
+       typedef std::vector<Rule *> Rules;
+       Rules mRules;
+       CodeDirectory::HashAlgorithm mHashType;
+       bool mCheckUnreadable;
+       bool mCheckUnknownType;
+};
+
+
+//
+// The "seal" on a single resource.
+//
+class ResourceSeal {
+public:
+       ResourceSeal(CFTypeRef ref);
+
+public:
+       operator bool () const { return mHash; }
+       bool operator ! () const { return mHash == NULL; }
+       
+       const SHA1::Byte *hash() const { return CFDataGetBytePtr(mHash); }
+       bool nested() const { return mFlags & ResourceBuilder::nested; }
+       bool optional() const { return mFlags & ResourceBuilder::optional; }
+       CFDictionaryRef dict() const { return mDict; }
+       CFStringRef requirement() const { return mRequirement; }
+       CFStringRef link() const { return mLink; }
+
+private:
+       CFDictionaryRef mDict;
+       CFDataRef mHash;
+       CFStringRef mRequirement;
+       CFStringRef mLink;
+       uint32_t mFlags;
+};
+
+
+} // end namespace CodeSigning
+} // end namespace Security
+
+#endif // !_H_RSIGN