Security-54.tar.gz

[apple/security.git] / Keychain / PolicyCursor.cpp

diff --git a/Keychain/PolicyCursor.cpp b/Keychain/PolicyCursor.cpp
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+/*
+ * Copyright (c) 2002 Apple Computer, Inc. All Rights Reserved.
+ * 
+ * The contents of this file constitute Original Code as defined in and are
+ * subject to the Apple Public Source License Version 1.2 (the 'License').
+ * You may not use this file except in compliance with the License. Please obtain
+ * a copy of the License at http://www.apple.com/publicsource and read it before
+ * using this file.
+ * 
+ * This 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.
+ */
+
+//
+// PolicyCursor.cpp
+//
+#include <Security/PolicyCursor.h>
+#include <Security/oidsalg.h>
+#include <Security/tpclient.h>
+
+using namespace KeychainCore;
+using namespace CssmClient;
+
+
+//
+// This preliminary implementation bypasses MDS and uses
+// a fixed set of policies known to exist in the one known TP.
+//
+struct TheOneTP : public TP {
+       TheOneTP() : TP(gGuidAppleX509TP) { }
+};
+
+static ModuleNexus<TheOneTP> theOneTP;
+static const CssmOid *theOidList[] = {
+       static_cast<const CssmOid *>(&CSSMOID_APPLE_ISIGN),
+       static_cast<const CssmOid *>(&CSSMOID_APPLE_X509_BASIC),
+       static_cast<const CssmOid *>(&CSSMOID_APPLE_TP_SSL),
+    NULL       // sentinel
+};
+
+
+//
+// Canonical Construction
+//
+PolicyCursor::PolicyCursor(const CSSM_OID* oid, const CSSM_DATA* value)
+    : mOid(CssmAllocator::standard()), mOidGiven(false)
+{
+    if (oid) {
+        mOid = CssmOid::required(oid);
+        mOidGiven = true;
+    }
+    mSearchPos = 0;
+}
+
+
+//
+// Destroy
+//
+PolicyCursor::~PolicyCursor()
+{
+}
+
+
+//
+// Crank the iterator
+//
+bool PolicyCursor::next(RefPointer<Policy> &policy)
+{
+    while (theOidList[mSearchPos]) {
+        if (mOidGiven && mOid != *theOidList[mSearchPos]) {
+            mSearchPos++;
+            continue;  // no oid match
+        }
+        // ignoring mValue - not used by current TP
+        policy = new Policy(theOneTP(), *theOidList[mSearchPos]);
+        mSearchPos++;  // advance cursor
+        return true;   // return next match
+    }
+    return false;      // end of table, no more matches
+}