X-Git-Url: https://git.netwichtig.de/gitweb/?a=blobdiff_plain;f=src%2Finspstring.cpp;h=38a51e82ffde04dcfc142e8989742201c56be9ea;hb=19963bd452eac3c9fc52b3ee60fbf1a81efed7d3;hp=b4c581f940305c0997cf928bbf096e62e4eb9e5a;hpb=f209cce90b394acd26e22eacef0bff61e8f5b4e1;p=user%2Fhenk%2Fcode%2Finspircd.git

diff --git a/src/inspstring.cpp b/src/inspstring.cpp
index b4c581f94..38a51e82f 100644
--- a/src/inspstring.cpp
+++ b/src/inspstring.cpp
@@ -2,8 +2,8 @@
  *       | Inspire Internet Relay Chat Daemon |
  *       +------------------------------------+
  *
- *  InspIRCd: (C) 2002-2009 InspIRCd Development Team
- * See: http://www.inspircd.org/wiki/index.php/Credits
+ *  InspIRCd: (C) 2002-2010 InspIRCd Development Team
+ * See: http://wiki.inspircd.org/Credits
  *
  * This program is free but copyrighted software; see
  *            the file COPYING for details.
@@ -11,9 +11,7 @@
  * ---------------------------------------------------
  */
 
-/* $Core */
-
-#include "inspstring.h"
+#include "inspircd.h"
 
 /*
  * Copyright (c) 1998 Todd C. Miller <Todd.Miller@courtesan.com>
@@ -136,3 +134,91 @@ CoreExport bool charremove(char* mp, char remove)
 
 	return shift_down;
 }
+
+static const char hextable[] = "0123456789abcdef";
+
+std::string BinToHex(const std::string& data)
+{
+	int l = data.length();
+	std::string rv;
+	rv.reserve(l * 2);
+	for(int i=0; i < l; i++)
+	{
+		unsigned char c = data[i];
+		rv.append(1, hextable[c >> 4]);
+		rv.append(1, hextable[c & 0xF]);
+	}
+	return rv;
+}
+
+static const char b64table[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
+
+std::string BinToBase64(const std::string& data_str, const char* table, char pad)
+{
+	if (!table)
+		table = b64table;
+
+	uint32_t buffer;
+	uint8_t* data = (uint8_t*)data_str.data();
+	std::string rv;
+	size_t i = 0;
+	while (i + 2 < data_str.length())
+	{
+		buffer = (data[i] << 16 | data[i+1] << 8 | data[i+2]);
+		rv.push_back(table[0x3F & (buffer >> 18)]);
+		rv.push_back(table[0x3F & (buffer >> 12)]);
+		rv.push_back(table[0x3F & (buffer >>  6)]);
+		rv.push_back(table[0x3F & (buffer >>  0)]);
+		i += 3;
+	}
+	if (data_str.length() == i)
+	{
+		// no extra characters
+	}
+	else if (data_str.length() == i + 1)
+	{
+		buffer = data[i] << 16;
+		rv.push_back(table[0x3F & (buffer >> 18)]);
+		rv.push_back(table[0x3F & (buffer >> 12)]);
+		if (pad)
+		{
+			rv.push_back(pad);
+			rv.push_back(pad);
+		}
+	}
+	else if (data_str.length() == i + 2)
+	{
+		buffer = (data[i] << 16 | data[i+1] << 8);
+		rv.push_back(table[0x3F & (buffer >> 18)]);
+		rv.push_back(table[0x3F & (buffer >> 12)]);
+		rv.push_back(table[0x3F & (buffer >>  6)]);
+		if (pad)
+			rv.push_back(pad);
+	}
+	return rv;
+}
+
+std::string Base64ToBin(const std::string& data_str, const char* table)
+{
+	if (!table)
+		table = b64table;
+
+	int bitcount = 0;
+	uint32_t buffer = 0;
+	const char* data = data_str.c_str();
+	std::string rv;
+	while (true)
+	{
+		const char* find = strchr(table, *data++);
+		if (!find || find >= table + 64)
+			break;
+		buffer = (buffer << 6) | (find - table);
+		bitcount += 6;
+		if (bitcount >= 8)
+		{
+			bitcount -= 8;
+			rv.push_back((buffer >> bitcount) & 0xFF);
+		}
+	}
+	return rv;
+}