Add Base64::{En,De]code()

fixes #9594
Icinga · Jul 9, 2015 · 58a3cd7 · 58a3cd7
1 parent 9b46945
commit 58a3cd7
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diff --git a/lib/remote/base64.cpp b/lib/remote/base64.cpp
@@ -0,0 +1,61 @@
+/******************************************************************************
+ * Icinga 2                                                                   *
+ * Copyright (C) 2012-2015 Icinga Development Team (http://www.icinga.org)    *
+ *                                                                            *
+ * This program is free software; you can redistribute it and/or              *
+ * modify it under the terms of the GNU General Public License                *
+ * as published by the Free Software Foundation; either version 2             *
+ * of the License, or (at your option) any later version.                     *
+ *                                                                            *
+ * This program is distributed in the hope that it will be useful,            *
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of             *
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the              *
+ * GNU General Public License for more details.                               *
+ *                                                                            *
+ * You should have received a copy of the GNU General Public License          *
+ * along with this program; if not, write to the Free Software Foundation     *
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.             *
+ ******************************************************************************/
+
+#include "remote/base64.hpp"
+#include <boost/archive/iterators/base64_from_binary.hpp>
+#include <boost/archive/iterators/binary_from_base64.hpp>
+#include <boost/archive/iterators/insert_linebreaks.hpp>
+#include <boost/archive/iterators/transform_width.hpp>
+#include <boost/archive/iterators/ostream_iterator.hpp>
+#include <sstream>
+
+using namespace icinga;
+
+const String base64_padding[] = {"", "==", "="};
+
+String Base64::Encode(const String& data)
+{
+	typedef boost::archive::iterators::base64_from_binary <boost::archive::iterators::transform_width<const char *, 6, 8> > base64_encode;
+
+	std::ostringstream msgbuf;
+	std::copy(base64_encode(data.CStr()), base64_encode(data.CStr() + data.GetLength()), std::ostream_iterator<char>(msgbuf));
+	msgbuf << base64_padding[data.GetLength() % 3];
+	return msgbuf.str();
+}
+
+String Base64::Decode(const String& data)
+{
+	typedef boost::archive::iterators::transform_width<boost::archive::iterators::binary_from_base64<const char *>, 8, 6> base64_decode;
+
+	String::SizeType size = data.GetLength();
+
+	if (size && data[size - 1] == '=') {
+		--size;
+
+		if (size && data[size - 1] == '=')
+			--size;
+	}
+
+	if (size == 0)
+		return String();
+
+	std::ostringstream msgbuf;
+	std::copy(base64_decode(data.CStr()), base64_decode(data.CStr() + size), std::ostream_iterator<char>(msgbuf));
+	return msgbuf.str();
+}
diff --git a/lib/remote/base64.hpp b/lib/remote/base64.hpp
@@ -0,0 +1,42 @@
+/******************************************************************************
+ * Icinga 2                                                                   *
+ * Copyright (C) 2012-2015 Icinga Development Team (http://www.icinga.org)    *
+ *                                                                            *
+ * This program is free software; you can redistribute it and/or              *
+ * modify it under the terms of the GNU General Public License                *
+ * as published by the Free Software Foundation; either version 2             *
+ * of the License, or (at your option) any later version.                     *
+ *                                                                            *
+ * This program is distributed in the hope that it will be useful,            *
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of             *
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the              *
+ * GNU General Public License for more details.                               *
+ *                                                                            *
+ * You should have received a copy of the GNU General Public License          *
+ * along with this program; if not, write to the Free Software Foundation     *
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.             *
+ ******************************************************************************/
+
+#ifndef BASE64_H
+#define BASE64_H
+
+#include "remote/i2-remote.hpp"
+#include "base/string.hpp"
+
+namespace icinga
+{
+
+/**
+ * Base64
+ *
+ * @ingroup remote
+ */
+struct I2_REMOTE_API Base64
+{
+	static String Decode(const String& data);
+	static String Encode(const String& data);
+};
+
+}
+
+#endif /* BASE64_H */