X-Git-Url: https://git.saurik.com/apple/security.git/blobdiff_plain/72a12576750f52947eb043106ba5c12c0d07decf..b1ab9ed8d0e0f1c3b66d7daa8fd5564444c56195:/libsecurity_codesigning/lib/reqparser.cpp

diff --git a/libsecurity_codesigning/lib/reqparser.cpp b/libsecurity_codesigning/lib/reqparser.cpp
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+++ b/libsecurity_codesigning/lib/reqparser.cpp
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+/*
+ * Copyright (c) 2006-2007 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@
+ */
+
+//
+// reqparser - interface to Requirement language parser/compiler
+//
+#include "reqparser.h"
+#include "antlrplugin.h"
+#include "cserror.h"
+#include "codesigning_dtrace.h"
+#include <CoreFoundation/CoreFoundation.h>
+#include <security_utilities/osxcode.h>
+
+namespace Security {
+namespace CodeSigning {
+
+
+struct PluginHost {
+	PluginHost();
+	RefPointer<LoadableBundle> plugin;
+	AntlrPlugin *antlr;
+};
+
+ModuleNexus<PluginHost> plugin;
+
+
+//
+// The PluginHost constructor runs under the protection of ModuleNexus's constructor,
+// so it doesn't have to worry about thread safety and such.
+//
+PluginHost::PluginHost()
+{
+	if (CFBundleRef securityFramework = CFBundleGetBundleWithIdentifier(CFSTR("com.apple.security")))
+		if (CFRef<CFURLRef> plugins = CFBundleCopyBuiltInPlugInsURL(securityFramework))
+			if (CFRef<CFURLRef> pluginURL = makeCFURL("csparser.bundle", true, plugins)) {
+				plugin = new LoadableBundle(cfString(pluginURL).c_str());
+				plugin->load();
+				CODESIGN_LOAD_ANTLR();
+				antlr = reinterpret_cast<FindAntlrPlugin *>(plugin->lookupSymbol(FINDANTLRPLUGIN))();
+				return;
+			}
+				
+	// can't load plugin - fail
+	MacOSError::throwMe(errSecCSInternalError);
+}
+
+
+//
+// Drive a parsing function through the plugin harness and translate any errors
+// into a CFError exception.
+//
+template <class Result, class Source>
+const Result *parse(Source source, const Result *(*AntlrPlugin::*func)(Source, string &))
+{
+	string errors;
+	if (const Result *result = (plugin().antlr->*func)(source, errors))
+		return result;
+	else
+		CSError::throwMe(errSecCSReqInvalid, kSecCFErrorRequirementSyntax, CFTempString(errors));		
+}
+
+
+//
+// Implement the template instances by passing them through the plugin's eye-of-the-needle.
+// Any other combination of input and output types will cause linker errors.
+//
+template <>
+const Requirement *RequirementParser<Requirement>::operator () (std::FILE *source)
+{
+	return parse(source, &AntlrPlugin::fileRequirement);
+}
+
+template <>
+const Requirement *RequirementParser<Requirement>::operator () (const std::string &source)
+{
+	return parse(source, &AntlrPlugin::stringRequirement);
+}
+
+template <>
+const Requirements *RequirementParser<Requirements>::operator () (std::FILE *source)
+{
+	return parse(source, &AntlrPlugin::fileRequirements);
+}
+
+template <>
+const Requirements *RequirementParser<Requirements>::operator () (const std::string &source)
+{
+	return parse(source, &AntlrPlugin::stringRequirements);
+}
+
+template <>
+const BlobCore *RequirementParser<BlobCore>::operator () (std::FILE *source)
+{
+	return parse(source, &AntlrPlugin::fileGeneric);
+}
+
+template <>
+const BlobCore *RequirementParser<BlobCore>::operator () (const std::string &source)
+{
+	return parse(source, &AntlrPlugin::stringGeneric);
+}
+
+
+}	// CodeSigning
+}	// Security