X-Git-Url: https://git.saurik.com/apple/security.git/blobdiff_plain/5dd5f9ec28f304ca377c42fd7f711d6cf12b90e1..5c19dc3ae3bd8e40a9c028b0deddd50ff337692c:/OSX/libsecurity_apple_cspdl/lib/SSCSPDLSession.cpp

diff --git a/OSX/libsecurity_apple_cspdl/lib/SSCSPDLSession.cpp b/OSX/libsecurity_apple_cspdl/lib/SSCSPDLSession.cpp
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+++ b/OSX/libsecurity_apple_cspdl/lib/SSCSPDLSession.cpp
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+/*
+ * Copyright (c) 2000-2001,2008,2011-2012 Apple 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.
+ */
+
+
+//
+// SSCSPDLSession.cpp - Security Server CSP/DL session.
+//
+#include "SSCSPDLSession.h"
+
+#include "CSPDLPlugin.h"
+#include "SSKey.h"
+
+
+#ifndef SECURITYSERVER_ACL_EDITS
+
+#include <security_cdsa_client/aclclient.h>
+#include <security_keychain/Access.h>
+#include <security_keychain/TrustedApplication.h>
+#include <security_utilities/seccfobject.h>
+
+//
+// ClientSessionKey - Lightweight wrapper for a KeyHandle that is also an CssmClient::AclBearer
+//
+class ClientSessionKey: public CssmClient::AclBearer
+{
+public:
+	ClientSessionKey(SecurityServer::ClientSession &clientSession, SecurityServer::KeyHandle keyHandle);
+	~ClientSessionKey();
+
+	// Acl manipulation
+	virtual void getAcl(AutoAclEntryInfoList &aclInfos,
+		const char *selectionTag = NULL) const;
+	virtual void changeAcl(const CSSM_ACL_EDIT &aclEdit,
+		const CSSM_ACCESS_CREDENTIALS *cred = NULL);
+	
+	// Acl owner manipulation
+	virtual void getOwner(AutoAclOwnerPrototype &owner) const;
+	virtual void changeOwner(const CSSM_ACL_OWNER_PROTOTYPE &newOwner,
+		const CSSM_ACCESS_CREDENTIALS *cred = NULL);
+
+
+private:
+	SecurityServer::ClientSession &mClientSession;
+	SecurityServer::KeyHandle mKeyHandle;
+};
+
+#endif //!SECURITYSERVER_ACL_EDITS
+
+
+using namespace SecurityServer;
+
+//
+// SSCSPDLSession -- Security Server CSP session
+//
+SSCSPDLSession::SSCSPDLSession()
+{
+}
+
+
+//
+// Reference Key management
+//
+void
+SSCSPDLSession::makeReferenceKey(SSCSPSession &session, KeyHandle inKeyHandle,
+								 CssmKey &outKey, SSDatabase &inSSDatabase,
+								 uint32 inKeyAttr, const CssmData *inKeyLabel)
+{
+	new SSKey(session, inKeyHandle, outKey, inSSDatabase, inKeyAttr,
+			  inKeyLabel);
+}
+
+SSKey &
+SSCSPDLSession::lookupKey(const CssmKey &inKey)
+{
+	/* for now we only allow ref keys */
+	if(inKey.blobType() != CSSM_KEYBLOB_REFERENCE) {
+		CssmError::throwMe(CSSMERR_CSP_INVALID_KEY);
+	}
+	
+	/* fetch key (this is just mapping the value in inKey.KeyData to an SSKey) */
+	SSKey &theKey = find<SSKey>(inKey);
+	
+	#ifdef someday 
+	/* 
+	 * Make sure caller hasn't changed any crucial header fields.
+	 * Some fields were changed by makeReferenceKey, so make a local copy....
+	 */
+	CSSM_KEYHEADER localHdr = cssmKey.KeyHeader;
+	get binKey-like thing from SSKey, maybe SSKey should keep a copy of 
+	hdr...but that's' not supersecure....;
+	
+	localHdr.BlobType = binKey->mKeyHeader.BlobType;
+	localHdr.Format = binKey->mKeyHeader.Format;
+	if(memcmp(&localHdr, &binKey->mKeyHeader, sizeof(CSSM_KEYHEADER))) {
+		CssmError::throwMe(CSSMERR_CSP_INVALID_KEY_REFERENCE);
+	}
+	#endif
+	return theKey;
+}
+
+// Notification we receive when the acl on a key has changed.  We should write it back to disk if it's persistent.
+void
+SSCSPDLSession::didChangeKeyAcl(SecurityServer::ClientSession &clientSession,
+	KeyHandle keyHandle, CSSM_ACL_AUTHORIZATION_TAG tag)
+{
+	SSKey *theKey = NULL;
+
+	{
+		// Lookup the SSKey for the KeyHandle
+		StLock<Mutex> _(mKeyMapLock);
+		KeyMap::const_iterator it;
+		KeyMap::const_iterator end = mKeyMap.end();
+		for (it = mKeyMap.begin(); it != end; ++it)
+		{
+			SSKey *aKey = dynamic_cast<SSKey *>(it->second);
+			if (aKey->optionalKeyHandle() == keyHandle)
+			{
+				// Write the key to disk if it's persistent.
+				theKey = aKey;
+				break;
+			}
+		}
+	}
+
+	if (theKey)
+	{
+		theKey->didChangeAcl();
+	}
+	else
+	{
+		// @@@ Should we really throw here or just continue without updating the ACL?  In reality this should never happen, so let's at least log it and throw.
+		secdebug("keyacl", "SSCSPDLSession::didChangeKeyAcl() keyHandle: %lu not found in map", (unsigned long)keyHandle);
+		CssmError::throwMe(CSSMERR_CSP_INVALID_KEY_REFERENCE);
+	}
+}
+
+void
+SSCSPDLSession::didChangeKeyAclCallback(void *context, SecurityServer::ClientSession &clientSession,
+	SecurityServer::KeyHandle key, CSSM_ACL_AUTHORIZATION_TAG tag)
+{
+	reinterpret_cast<SSCSPDLSession *>(context)->didChangeKeyAcl(clientSession, key, tag);
+}
+
+#ifndef SECURITYSERVER_ACL_EDITS
+//
+// ClientSessionKey - Lightweight wrapper for a KeyHandle that is also an CssmClient::AclBearer
+//
+ClientSessionKey::ClientSessionKey(ClientSession &clientSession, SecurityServer::KeyHandle keyHandle) :
+	mClientSession(clientSession),
+	mKeyHandle(keyHandle)
+{
+}
+
+ClientSessionKey::~ClientSessionKey()
+{
+}
+
+void
+ClientSessionKey::getAcl(AutoAclEntryInfoList &aclInfos,
+	const char *selectionTag) const
+{
+	secdebug("keyacl", "ClientSessionKey::getAcl() keyHandle: %u", mKeyHandle);
+	aclInfos.allocator(mClientSession.returnAllocator);
+	mClientSession.getKeyAcl(mKeyHandle, selectionTag,
+		*static_cast<uint32 *>(aclInfos),
+		*reinterpret_cast<AclEntryInfo **>(static_cast<CSSM_ACL_ENTRY_INFO_PTR *>(aclInfos)));
+}
+
+void
+ClientSessionKey::changeAcl(const CSSM_ACL_EDIT &aclEdit,
+	const CSSM_ACCESS_CREDENTIALS *cred)
+{
+	secdebug("keyacl", "ClientSessionKey::changeAcl() keyHandle: %u", mKeyHandle);
+	mClientSession.changeKeyAcl(mKeyHandle, AccessCredentials::overlay(*cred), AclEdit::overlay(aclEdit));
+}
+
+void
+ClientSessionKey::getOwner(AutoAclOwnerPrototype &owner) const
+{
+	secdebug("keyacl", "ClientSessionKey::getOwner() keyHandle: %u", mKeyHandle);
+	owner.allocator(mClientSession.returnAllocator);
+	mClientSession.getKeyOwner(mKeyHandle,
+		*reinterpret_cast<AclOwnerPrototype *>(static_cast<CSSM_ACL_OWNER_PROTOTYPE *>(owner)));
+}
+
+void
+ClientSessionKey::changeOwner(const CSSM_ACL_OWNER_PROTOTYPE &newOwner,
+	const CSSM_ACCESS_CREDENTIALS *cred)
+{
+	secdebug("keyacl", "ClientSessionKey::changeOwner() keyHandle: %u", mKeyHandle);
+	mClientSession.changeKeyOwner(mKeyHandle, AccessCredentials::overlay(*cred), AclOwnerPrototype::overlay(newOwner));
+}
+
+#endif // !SECURITYSERVER_ACL_EDITS