Security-57031.1.35.tar.gz

[apple/security.git] / Security / libsecurity_cdsa_utilities / lib / db++.h

diff --git a/Security/libsecurity_cdsa_utilities/lib/db++.h b/Security/libsecurity_cdsa_utilities/lib/db++.h
new file mode 100644 (file)
index 0000000..79d84a5
--- /dev/null
+++ b/Security/libsecurity_cdsa_utilities/lib/db++.h
@@ -0,0 +1,91 @@
+/*
+ * Copyright (c) 2003-2004,2006,2011,2014 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@
+ */
+
+
+//
+// dbm++ - generic C++ layer interface to [n]dbm
+//
+#ifndef _H_DBMPP
+#define _H_DBMPP
+
+#include <security_utilities/utilities.h>
+#include <security_cdsa_utilities/cssmdata.h>
+#include <security_utilities/unix++.h>
+#include <string>
+#include <db.h>
+
+
+namespace Security {
+namespace UnixPlusPlus {
+
+
+class UnixDb : public FileDesc {
+public:
+       UnixDb();
+       UnixDb(const char *path, int flags = O_RDWR, int mode = 0666, DBTYPE type = DB_HASH);
+       UnixDb(const std::string &path, int flags = O_RDWR, int mode = 0666, DBTYPE type = DB_HASH);
+       
+       virtual ~UnixDb();
+               
+       void open(const char *path, int flags = O_RDWR, int mode = 0666, DBTYPE type = DB_HASH);
+       void open(const std::string &path, int flags = O_RDWR, int mode = 0666, DBTYPE type = DB_HASH);
+       void close();
+
+       bool get(const CssmData &key, CssmData &value, int flags = 0) const;
+       bool get(const CssmData &key, CssmOwnedData &value, int flags = 0) const;
+       bool put(const CssmData &key, const CssmData &value, int flags = 0);
+       void erase(const CssmData &key, int flags = 0);
+       void flush(int flags = 0);
+       
+       bool next(CssmData &key, CssmData &value, int flags = R_NEXT) const;
+       bool first(CssmData &key, CssmData &value) const
+               { return next(key, value, R_FIRST); }
+       
+       operator bool () const
+               { return mDb; }
+       
+public:
+       struct Data : public PodWrapper<Data, DBT> {
+               template <class T>
+               Data(const T &src)              { DBT::data = src.data(); DBT::size = src.length(); }
+               
+               Data() { }
+               Data(void *data, size_t length) { DBT::data = data; DBT::size = length; }
+               Data(const DBT &dat)    { DBT::data = dat.data; DBT::size = dat.size; }
+               
+               void *data() const              { return DBT::data; }
+               size_t length() const   { return size; }
+               operator bool () const  { return DBT::data != NULL; }
+               operator CssmData () const { return CssmData(data(), length()); }
+       };
+
+private:
+       DB *mDb;
+};
+
+
+}      // end namespace UnixPlusPlus
+}      // end namespace Security
+
+
+#endif //_H_DBMPP