From 13e18cf59686319efee0080d523c4bc2d948b591 Mon Sep 17 00:00:00 2001
From: Daniel Friesel <daniel.friesel@uos.de>
Date: Wed, 12 May 2021 15:00:44 +0200
Subject: add xdr

---
 include/lib/xdr.h   | 66 +++++++++++++++++++++++++++++++++++++++++++++++++++
 include/lib/xdr16.h | 68 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 134 insertions(+)
 create mode 100644 include/lib/xdr.h
 create mode 100644 include/lib/xdr16.h

(limited to 'include/lib')

diff --git a/include/lib/xdr.h b/include/lib/xdr.h
new file mode 100644
index 0000000..c451a2f
--- /dev/null
+++ b/include/lib/xdr.h
@@ -0,0 +1,66 @@
+#ifndef XDR_H
+#define XDR_H
+
+#include <stdint.h>
+
+class XDRWriter
+{
+private:
+	XDRWriter(const XDRWriter &copy);
+	char *buffer;
+	uint32_t next_array_len;
+	uint32_t pos;
+	bool is_fixed_length;
+
+public:
+	XDRWriter(char *output_buf) : buffer(output_buf), next_array_len(0), pos(0) {}
+
+	inline void setNextArrayLen(uint32_t len) { next_array_len = len; }
+	inline void setFixedLength() { is_fixed_length = true; }
+	inline void setVariableLength() { is_fixed_length = false; }
+	inline void startList()
+	{
+		if (!is_fixed_length)
+		{
+			put(next_array_len);
+		}
+	}
+
+	inline void put(char c) { put((int32_t)c); }
+	inline void put(unsigned char c) { put((uint32_t)c); }
+	inline void put(uint16_t number) { put((int32_t)number); }
+	inline void put(int16_t number) { put((uint32_t)number); }
+	void put(uint32_t number);
+	void put(int32_t number);
+	void put(uint64_t number);
+	void put(int64_t number);
+	void put(float number);
+	void put(double number);
+	void put(char const *text);
+	template <uint32_t TSize>
+	void put(char const (&text)[TSize]);
+
+	inline uint32_t size() { return pos; }
+};
+
+class XDRReader
+{
+private:
+	XDRReader(const XDRReader &copy);
+	char *data;
+	uint32_t pos;
+
+public:
+	XDRReader(char *d) : pos(0) { data = d; }
+	uint32_t get_uint32();
+	int32_t get_int32();
+	uint64_t get_uint64();
+	int64_t get_int64();
+	float get_float();
+	double get_double();
+	uint32_t get_opaque_length();
+	char *get_opaque(uint32_t length);
+	void get_string(char *target);
+};
+
+#endif
diff --git a/include/lib/xdr16.h b/include/lib/xdr16.h
new file mode 100644
index 0000000..483efe4
--- /dev/null
+++ b/include/lib/xdr16.h
@@ -0,0 +1,68 @@
+#ifndef XDR16_H
+#define XDR16_H
+
+#include <stdint.h>
+
+class XDRWriter
+{
+private:
+	XDRWriter(const XDRWriter &copy);
+	char *buffer;
+	uint16_t next_array_len;
+	uint16_t pos;
+	bool is_fixed_length;
+
+public:
+	XDRWriter(char *output_buf) : buffer(output_buf), next_array_len(0), pos(0) {}
+
+	inline void setNextArrayLen(uint16_t len) { next_array_len = len; }
+	inline void setFixedLength() { is_fixed_length = true; }
+	inline void setVariableLength() { is_fixed_length = false; }
+	inline void startList()
+	{
+		if (!is_fixed_length)
+		{
+			put(next_array_len);
+		}
+	}
+
+	inline void put(char c) { put((int16_t)c); }
+	inline void put(unsigned char c) { put((uint16_t)c); }
+	void put(uint16_t number);
+	void put(int16_t number);
+	void put(uint32_t number);
+	void put(int32_t number);
+	void put(uint64_t number);
+	void put(int64_t number);
+	void put(float number);
+	void put(double number);
+	void put(char const *text);
+	template <uint16_t TSize>
+	void put(char const (&text)[TSize]);
+
+	inline uint16_t size() { return pos; }
+};
+
+class XDRReader
+{
+private:
+	XDRReader(const XDRReader &copy);
+	char *data;
+	uint32_t pos;
+
+public:
+	XDRReader(char *d) : pos(0) { data = d; }
+	int16_t get_int16();
+	uint16_t get_uint16();
+	uint32_t get_uint32();
+	int32_t get_int32();
+	uint64_t get_uint64();
+	int64_t get_int64();
+	float get_float();
+	double get_double();
+	uint32_t get_opaque_length();
+	char *get_opaque(uint32_t length);
+	void get_string(char *target);
+};
+
+#endif
-- 
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