X-Git-Url: https://git.saurik.com/apple/security.git/blobdiff_plain/80e2389990082500d76eb566d4946be3e786c3ef..d8f41ccd20de16f8ebe2ccc84d47bf1cb2b26bbb:/Security/libsecurity_codesigning/lib/SecStaticCode.cpp?ds=sidebyside

diff --git a/Security/libsecurity_codesigning/lib/SecStaticCode.cpp b/Security/libsecurity_codesigning/lib/SecStaticCode.cpp
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+/*
+ * Copyright (c) 2006-2007,2011-2014 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@
+ */
+
+//
+// SecStaticCode - API frame for SecStaticCode objects
+//
+#include "cs.h"
+#include "StaticCode.h"
+#include <security_utilities/cfmunge.h>
+#include <fcntl.h>
+#include <dirent.h>
+
+using namespace CodeSigning;
+
+
+//
+// CF-standard type code function
+//
+CFTypeID SecStaticCodeGetTypeID(void)
+{
+	BEGIN_CSAPI
+	return gCFObjects().StaticCode.typeID;
+    END_CSAPI1(_kCFRuntimeNotATypeID)
+}
+
+
+//
+// Create an StaticCode directly from disk path.
+//
+OSStatus SecStaticCodeCreateWithPath(CFURLRef path, SecCSFlags flags, SecStaticCodeRef *staticCodeRef)
+{
+	BEGIN_CSAPI
+	
+	checkFlags(flags);
+	CodeSigning::Required(staticCodeRef) = (new SecStaticCode(DiskRep::bestGuess(cfString(path).c_str())))->handle();
+
+	END_CSAPI
+}
+
+const CFStringRef kSecCodeAttributeArchitecture =	CFSTR("architecture");
+const CFStringRef kSecCodeAttributeSubarchitecture =CFSTR("subarchitecture");
+const CFStringRef kSecCodeAttributeBundleVersion =	CFSTR("bundleversion");
+const CFStringRef kSecCodeAttributeUniversalFileOffset =	CFSTR("UniversalFileOffset");
+
+OSStatus SecStaticCodeCreateWithPathAndAttributes(CFURLRef path, SecCSFlags flags, CFDictionaryRef attributes,
+	SecStaticCodeRef *staticCodeRef)
+{
+	BEGIN_CSAPI
+	
+	checkFlags(flags);
+	DiskRep::Context ctx;
+	std::string version; // holds memory placed into ctx
+	if (attributes) {
+		std::string archName;
+		int archNumber, subarchNumber, offset;
+		if (cfscan(attributes, "{%O=%d}", kSecCodeAttributeUniversalFileOffset, &offset)) {
+			ctx.offset = offset;
+		} else if (cfscan(attributes, "{%O=%s}", kSecCodeAttributeArchitecture, &archName)) {
+			ctx.arch = Architecture(archName.c_str());
+		} else if (cfscan(attributes, "{%O=%d,%O=%d}",
+				kSecCodeAttributeArchitecture, &archNumber, kSecCodeAttributeSubarchitecture, &subarchNumber))
+			ctx.arch = Architecture(archNumber, subarchNumber);
+		else if (cfscan(attributes, "{%O=%d}", kSecCodeAttributeArchitecture, &archNumber))
+			ctx.arch = Architecture(archNumber);
+		if (cfscan(attributes, "{%O=%s}", kSecCodeAttributeBundleVersion, &version))
+			ctx.version = version.c_str();
+	}
+
+	CodeSigning::Required(staticCodeRef) = (new SecStaticCode(DiskRep::bestGuess(cfString(path).c_str(), &ctx)))->handle();
+
+	END_CSAPI
+}
+
+
+//
+// Check static validity of a StaticCode
+//
+OSStatus SecStaticCodeCheckValidity(SecStaticCodeRef staticCodeRef, SecCSFlags flags,
+	SecRequirementRef requirementRef)
+{
+	return SecStaticCodeCheckValidityWithErrors(staticCodeRef, flags, requirementRef, NULL);
+}
+
+OSStatus SecStaticCodeCheckValidityWithErrors(SecStaticCodeRef staticCodeRef, SecCSFlags flags,
+	SecRequirementRef requirementRef, CFErrorRef *errors)
+{
+	BEGIN_CSAPI
+	
+	checkFlags(flags,
+		  kSecCSReportProgress
+		| kSecCSCheckAllArchitectures
+		| kSecCSDoNotValidateExecutable
+		| kSecCSDoNotValidateResources
+		| kSecCSConsiderExpiration
+        | kSecCSEnforceRevocationChecks
+		| kSecCSNoNetworkAccess
+		| kSecCSCheckNestedCode
+		| kSecCSStrictValidate);
+	
+	if (errors)
+		flags |= kSecCSFullReport;	// internal-use flag
+
+	SecPointer<SecStaticCode> code = SecStaticCode::requiredStatic(staticCodeRef);
+	code->setValidationFlags(flags);
+	const SecRequirement *req = SecRequirement::optional(requirementRef);
+	DTRACK(CODESIGN_EVAL_STATIC, code, (char*)code->mainExecutablePath().c_str());
+	code->staticValidate(flags, req);
+
+	END_CSAPI_ERRORS
+}
+
+
+//
+// ====================================================================================
+//
+// The following API functions are called SecCode* but accept both SecCodeRef and
+// SecStaticCodeRef arguments, operating on the implied SecStaticCodeRef as appropriate.
+// Hence they're here, rather than in SecCode.cpp.
+//
+
+
+//
+// Retrieve location information for an StaticCode.
+//
+OSStatus SecCodeCopyPath(SecStaticCodeRef staticCodeRef, SecCSFlags flags, CFURLRef *path)
+{
+	BEGIN_CSAPI
+	
+	checkFlags(flags);
+	SecPointer<SecStaticCode> staticCode = SecStaticCode::requiredStatic(staticCodeRef);
+	CodeSigning::Required(path) = staticCode->copyCanonicalPath();
+
+	END_CSAPI
+}
+
+
+//
+// Fetch or make up a designated requirement
+//
+OSStatus SecCodeCopyDesignatedRequirement(SecStaticCodeRef staticCodeRef, SecCSFlags flags,
+	SecRequirementRef *requirementRef)
+{
+	BEGIN_CSAPI
+	
+	checkFlags(flags);
+	const Requirement *req =
+		SecStaticCode::requiredStatic(staticCodeRef)->designatedRequirement();
+	CodeSigning::Required(requirementRef) = (new SecRequirement(req))->handle();
+
+	END_CSAPI
+}
+
+
+//
+// Fetch a particular internal requirement, if present
+//
+OSStatus SecCodeCopyInternalRequirement(SecStaticCodeRef staticCodeRef, SecRequirementType type,
+	SecCSFlags flags, SecRequirementRef *requirementRef)
+{
+	BEGIN_CSAPI
+	
+	checkFlags(flags);
+	const Requirement *req =
+		SecStaticCode::requiredStatic(staticCodeRef)->internalRequirement(type);
+	CodeSigning::Required(requirementRef) = req ? (new SecRequirement(req))->handle() : NULL;
+
+	END_CSAPI
+}
+
+
+//
+// Record for future use a detached code signature.
+//
+OSStatus SecCodeSetDetachedSignature(SecStaticCodeRef codeRef, CFDataRef signature,
+	SecCSFlags flags)
+{
+	BEGIN_CSAPI
+	
+	checkFlags(flags);
+	SecPointer<SecStaticCode> code = SecStaticCode::requiredStatic(codeRef);
+
+	code->detachedSignature(signature); // ... and pass it to the code
+	code->resetValidity();
+
+	END_CSAPI
+}
+
+
+//
+// Attach a code signature to a kernel memory mapping for page-in validation.
+//
+OSStatus SecCodeMapMemory(SecStaticCodeRef codeRef, SecCSFlags flags)
+{
+	BEGIN_CSAPI
+
+	checkFlags(flags);
+	SecPointer<SecStaticCode> code = SecStaticCode::requiredStatic(codeRef);
+	if (const CodeDirectory *cd = code->codeDirectory(false)) {
+		fsignatures args = { code->diskRep()->signingBase(), (void *)cd, cd->length() };
+		UnixError::check(::fcntl(code->diskRep()->fd(), F_ADDSIGS, &args));
+	} else
+		MacOSError::throwMe(errSecCSUnsigned);
+
+	END_CSAPI
+}
+
+
+//
+// Attach a callback block to a code object
+//
+OSStatus SecStaticCodeSetCallback(SecStaticCodeRef codeRef, SecCSFlags flags, SecCodeCallback *old, SecCodeCallback monitor)
+{
+	BEGIN_CSAPI
+
+	checkFlags(flags);
+	SecStaticCode *code = SecStaticCode::requiredStatic(codeRef);
+	if (old)
+		*old = code->monitor();
+	code->setMonitor(monitor);
+
+	END_CSAPI
+}
+
+
+OSStatus SecStaticCodeSetValidationConditions(SecStaticCodeRef codeRef, CFDictionaryRef conditions)
+{
+	BEGIN_CSAPI
+	
+	checkFlags(0);
+	SecStaticCode *code = SecStaticCode::requiredStatic(codeRef);
+	code->setValidationModifiers(conditions);
+	
+	END_CSAPI
+}
+
+
+//
+// Set cancellation flag on a static code object.
+//
+OSStatus SecStaticCodeCancelValidation(SecStaticCodeRef codeRef, SecCSFlags flags)
+{
+	BEGIN_CSAPI
+	
+	checkFlags(0);
+	SecStaticCode *code = SecStaticCode::requiredStatic(codeRef);
+	code->cancelValidation();
+	
+	END_CSAPI
+}