From e18fa1d8ad9208a9f5bcfe2d97d36ae3675c80f1 Mon Sep 17 00:00:00 2001
From: Stijn Buys <ingar@osirion.org>
Date: Sun, 10 Jul 2011 19:31:42 +0000
Subject: Generate a player ID when connecting to a server, read it from
 keys.ini if it was previously generated.

---
 src/core/uid.cc | 141 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 141 insertions(+)
 create mode 100644 src/core/uid.cc

(limited to 'src/core/uid.cc')

diff --git a/src/core/uid.cc b/src/core/uid.cc
new file mode 100644
index 0000000..c33e465
--- /dev/null
+++ b/src/core/uid.cc
@@ -0,0 +1,141 @@
+/*
+   core/uid.cc
+   This file is part of the Osirion project and is distributed under
+   the terms of the GNU General Public License version 2.
+*/ 
+
+// #include <cstring>
+#include "sys/sys.h"
+#include "core/uid.h"
+#include "math/functions.h"
+
+#include <cstring>
+
+namespace core
+{
+
+const char hexchar[16] = {'0','1','2','3','4','5','6','7','8','9','a','b','c','d','e','f'};
+
+UID::UID()
+{
+	clear();
+}
+
+UID::~UID()
+{
+	clear();
+}
+
+UID::UID(const UID & other)
+{
+	assign(other);
+}
+
+void UID::assign(const UID & other)
+{
+	memcpy(uid_key, other.uid_key, UIDKEYSIZE);
+}
+
+void UID::assign(const std::string & str)
+{
+	char new_key[UIDKEYSIZE];
+	char l, h;
+	
+	if (str.size() != UIDKEYSIZE * 2) {
+		return;
+	}
+	
+	for (size_t i = 0; i < UIDKEYSIZE; i++ ) {
+		h = str[i * 2];
+		switch (h) {
+			case '0':
+			case '1':
+			case '2':
+			case '3':
+			case '4':
+			case '5':
+			case '6':
+			case '7':
+			case '8':
+			case '9':
+				new_key[i] = (h - '0') << 4;
+				break;
+			case 'a':
+			case 'b':
+			case 'c':
+			case 'd':
+			case 'e':
+			case 'f':
+				new_key[i] = (h - 'a' + 10) << 4;
+				break;
+			default:
+				return;
+				break;
+		}
+		
+		l = str[i * 2 + 1];
+		switch (l) {
+			case '0':
+			case '1':
+			case '2':
+			case '3':
+			case '4':
+			case '5':
+			case '6':
+			case '7':
+			case '8':
+			case '9':
+				new_key[i] += (l - '0');
+				break;
+			case 'a':
+			case 'b':
+			case 'c':
+			case 'd':
+			case 'e':
+			case 'f':
+				new_key[i] += (l - 'a' + 10);
+				break;
+			default:
+				return;
+				break;
+		}
+	}
+	
+	memcpy(uid_key, new_key, UIDKEYSIZE);
+}
+
+void UID::generate()
+{
+	for (size_t i = 0; i < UIDKEYSIZE; i++) {
+		// FIXME the worst random key generator ever
+		uid_key[i] = math::randomi(256);
+	}
+}
+
+bool UID::is_valid() const
+{
+	for (size_t i = 0; i < UIDKEYSIZE; i++) {
+		if (uid_key[i] != 0 )
+			return true;
+	}
+	return false;
+}
+
+void UID::clear()
+{
+	memset(uid_key, 0, UIDKEYSIZE);
+}
+
+const std::string UID::str() const {
+	std::string s;
+	for (size_t i = 0; i < UIDKEYSIZE; i++) {
+		// upper nibble
+		s += hexchar[ uid_key[i] >> 4 ];
+		// lower nibble
+		s += hexchar[ uid_key[i] % 16 ];
+	}
+	return s;
+}
+
+
+} // namespace core
-- 
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