X-Git-Url: https://git.netwichtig.de/gitweb/?a=blobdiff_plain;f=src%2Fmodules%2Fm_md5.cpp;h=7669d63d752c7bf7c9c0f0814deea1a6571048a3;hb=67a4a9b62355ea57a2f4521ca5fc53bd4eac3a1f;hp=c9b062e43e15b849aef2fe165b8b42e6abce6c2e;hpb=bab14f0dd2345c9d7dcbc47c918563709e1ac094;p=user%2Fhenk%2Fcode%2Finspircd.git

diff --git a/src/modules/m_md5.cpp b/src/modules/m_md5.cpp
index c9b062e43..7669d63d7 100644
--- a/src/modules/m_md5.cpp
+++ b/src/modules/m_md5.cpp
@@ -1 +1,303 @@
-/*       +------------------------------------+
 *       | Inspire Internet Relay Chat Daemon |
 *       +------------------------------------+
 *
 *  InspIRCd: (C) 2002-2007 InspIRCd Development Team
 * See: http://www.inspircd.org/wiki/index.php/Credits
 *
 * This program is free but copyrighted software; see
 *            the file COPYING for details.
 *
 * ---------------------------------------------------
 */

/* $ModDesc: Allows for MD5 encrypted oper passwords */
/* $ModDep: m_hash.h */

#include "inspircd.h"
#ifdef HAS_STDINT
#include <stdint.h>
#endif
#include "users.h"
#include "channels.h"
#include "modules.h"
#include "m_hash.h"

/* The four core functions - F1 is optimized somewhat */
#define F1(x, y, z) (z ^ (x & (y ^ z)))
#define F2(x, y, z) F1(z, x, y)
#define F3(x, y, z) (x ^ y ^ z)
#define F4(x, y, z) (y ^ (x | ~z))

/* This is the central step in the MD5 algorithm. */
#define MD5STEP(f,w,x,y,z,in,s) \
	(w += f(x,y,z) + in, w = (w<<s | w>>(32-s)) + x)

#ifndef HAS_STDINT
typedef unsigned int uint32_t;
#endif

typedef uint32_t word32; /* NOT unsigned long. We don't support 16 bit platforms, anyway. */
typedef unsigned char byte;

/** An MD5 context, used by m_opermd5
 */
class MD5Context : public classbase
{
 public:
	word32 buf[4];
	word32 bytes[2];
	word32 in[16];
};

class ModuleMD5 : public Module
{
	void byteSwap(word32 *buf, unsigned words)
	{
		byte *p = (byte *)buf;
	
		do
		{
			*buf++ = (word32)((unsigned)p[3] << 8 | p[2]) << 16 |
				((unsigned)p[1] << 8 | p[0]);
			p += 4;
		} while (--words);
	}

	void MD5Init(MD5Context *ctx, unsigned int* key = NULL)
	{
		/* These are the defaults for md5 */
		if (!key)
		{
			ctx->buf[0] = 0x67452301;
			ctx->buf[1] = 0xefcdab89;
			ctx->buf[2] = 0x98badcfe;
			ctx->buf[3] = 0x10325476;
		}
		else
		{
			ctx->buf[0] = key[0];
			ctx->buf[1] = key[1];
			ctx->buf[2] = key[2];
			ctx->buf[3] = key[3];
		}
	
		ctx->bytes[0] = 0;
		ctx->bytes[1] = 0;
	}

	void MD5Update(MD5Context *ctx, byte const *buf, int len)
	{
		word32 t;
	
		/* Update byte count */
	
		t = ctx->bytes[0];
		if ((ctx->bytes[0] = t + len) < t)
			ctx->bytes[1]++;	/* Carry from low to high */
	
		t = 64 - (t & 0x3f);	/* Space available in ctx->in (at least 1) */
		if ((unsigned)t > (unsigned)len)
		{
			memcpy((byte *)ctx->in + 64 - (unsigned)t, buf, len);
			return;
		}
		/* First chunk is an odd size */
		memcpy((byte *)ctx->in + 64 - (unsigned)t, buf, (unsigned)t);
		byteSwap(ctx->in, 16);
		MD5Transform(ctx->buf, ctx->in);
		buf += (unsigned)t;
		len -= (unsigned)t;
	
		/* Process data in 64-byte chunks */
		while (len >= 64)
		{
			memcpy(ctx->in, buf, 64);
			byteSwap(ctx->in, 16);
			MD5Transform(ctx->buf, ctx->in);
			buf += 64;
			len -= 64;
		}
	
		/* Handle any remaining bytes of data. */
		memcpy(ctx->in, buf, len);
	}
	
	void MD5Final(byte digest[16], MD5Context *ctx)
	{
		int count = (int)(ctx->bytes[0] & 0x3f); /* Bytes in ctx->in */
		byte *p = (byte *)ctx->in + count;	/* First unused byte */
	
		/* Set the first char of padding to 0x80.  There is always room. */
		*p++ = 0x80;
	
		/* Bytes of padding needed to make 56 bytes (-8..55) */
		count = 56 - 1 - count;
	
		if (count < 0)
		{	/* Padding forces an extra block */
			memset(p, 0, count+8);
			byteSwap(ctx->in, 16);
			MD5Transform(ctx->buf, ctx->in);
			p = (byte *)ctx->in;
			count = 56;
		}
		memset(p, 0, count+8);
		byteSwap(ctx->in, 14);
	
		/* Append length in bits and transform */
		ctx->in[14] = ctx->bytes[0] << 3;
		ctx->in[15] = ctx->bytes[1] << 3 | ctx->bytes[0] >> 29;
		MD5Transform(ctx->buf, ctx->in);
	
		byteSwap(ctx->buf, 4);
		memcpy(digest, ctx->buf, 16);
		memset(ctx, 0, sizeof(ctx));
	}
	
	void MD5Transform(word32 buf[4], word32 const in[16])
	{
		register word32 a, b, c, d;
	
		a = buf[0];
		b = buf[1];
		c = buf[2];
		d = buf[3];
	
		MD5STEP(F1, a, b, c, d, in[0] + 0xd76aa478, 7);
		MD5STEP(F1, d, a, b, c, in[1] + 0xe8c7b756, 12);
		MD5STEP(F1, c, d, a, b, in[2] + 0x242070db, 17);
		MD5STEP(F1, b, c, d, a, in[3] + 0xc1bdceee, 22);
		MD5STEP(F1, a, b, c, d, in[4] + 0xf57c0faf, 7);
		MD5STEP(F1, d, a, b, c, in[5] + 0x4787c62a, 12);
		MD5STEP(F1, c, d, a, b, in[6] + 0xa8304613, 17);
		MD5STEP(F1, b, c, d, a, in[7] + 0xfd469501, 22);
		MD5STEP(F1, a, b, c, d, in[8] + 0x698098d8, 7);
		MD5STEP(F1, d, a, b, c, in[9] + 0x8b44f7af, 12);
		MD5STEP(F1, c, d, a, b, in[10] + 0xffff5bb1, 17);
		MD5STEP(F1, b, c, d, a, in[11] + 0x895cd7be, 22);
		MD5STEP(F1, a, b, c, d, in[12] + 0x6b901122, 7);
		MD5STEP(F1, d, a, b, c, in[13] + 0xfd987193, 12);
		MD5STEP(F1, c, d, a, b, in[14] + 0xa679438e, 17);
		MD5STEP(F1, b, c, d, a, in[15] + 0x49b40821, 22);
	
		MD5STEP(F2, a, b, c, d, in[1] + 0xf61e2562, 5);
		MD5STEP(F2, d, a, b, c, in[6] + 0xc040b340, 9);
		MD5STEP(F2, c, d, a, b, in[11] + 0x265e5a51, 14);
		MD5STEP(F2, b, c, d, a, in[0] + 0xe9b6c7aa, 20);
		MD5STEP(F2, a, b, c, d, in[5] + 0xd62f105d, 5);
		MD5STEP(F2, d, a, b, c, in[10] + 0x02441453, 9);
		MD5STEP(F2, c, d, a, b, in[15] + 0xd8a1e681, 14);
		MD5STEP(F2, b, c, d, a, in[4] + 0xe7d3fbc8, 20);
		MD5STEP(F2, a, b, c, d, in[9] + 0x21e1cde6, 5);
		MD5STEP(F2, d, a, b, c, in[14] + 0xc33707d6, 9);
		MD5STEP(F2, c, d, a, b, in[3] + 0xf4d50d87, 14);
		MD5STEP(F2, b, c, d, a, in[8] + 0x455a14ed, 20);
		MD5STEP(F2, a, b, c, d, in[13] + 0xa9e3e905, 5);
		MD5STEP(F2, d, a, b, c, in[2] + 0xfcefa3f8, 9);
		MD5STEP(F2, c, d, a, b, in[7] + 0x676f02d9, 14);
		MD5STEP(F2, b, c, d, a, in[12] + 0x8d2a4c8a, 20);
	
		MD5STEP(F3, a, b, c, d, in[5] + 0xfffa3942, 4);
		MD5STEP(F3, d, a, b, c, in[8] + 0x8771f681, 11);
		MD5STEP(F3, c, d, a, b, in[11] + 0x6d9d6122, 16);
		MD5STEP(F3, b, c, d, a, in[14] + 0xfde5380c, 23);
		MD5STEP(F3, a, b, c, d, in[1] + 0xa4beea44, 4);
		MD5STEP(F3, d, a, b, c, in[4] + 0x4bdecfa9, 11);
		MD5STEP(F3, c, d, a, b, in[7] + 0xf6bb4b60, 16);
		MD5STEP(F3, b, c, d, a, in[10] + 0xbebfbc70, 23);
		MD5STEP(F3, a, b, c, d, in[13] + 0x289b7ec6, 4);
		MD5STEP(F3, d, a, b, c, in[0] + 0xeaa127fa, 11);
		MD5STEP(F3, c, d, a, b, in[3] + 0xd4ef3085, 16);
		MD5STEP(F3, b, c, d, a, in[6] + 0x04881d05, 23);
		MD5STEP(F3, a, b, c, d, in[9] + 0xd9d4d039, 4);
		MD5STEP(F3, d, a, b, c, in[12] + 0xe6db99e5, 11);
		MD5STEP(F3, c, d, a, b, in[15] + 0x1fa27cf8, 16);
		MD5STEP(F3, b, c, d, a, in[2] + 0xc4ac5665, 23);
	
		MD5STEP(F4, a, b, c, d, in[0] + 0xf4292244, 6);
		MD5STEP(F4, d, a, b, c, in[7] + 0x432aff97, 10);
		MD5STEP(F4, c, d, a, b, in[14] + 0xab9423a7, 15);
		MD5STEP(F4, b, c, d, a, in[5] + 0xfc93a039, 21);
		MD5STEP(F4, a, b, c, d, in[12] + 0x655b59c3, 6);
		MD5STEP(F4, d, a, b, c, in[3] + 0x8f0ccc92, 10);
		MD5STEP(F4, c, d, a, b, in[10] + 0xffeff47d, 15);
		MD5STEP(F4, b, c, d, a, in[1] + 0x85845dd1, 21);
		MD5STEP(F4, a, b, c, d, in[8] + 0x6fa87e4f, 6);
		MD5STEP(F4, d, a, b, c, in[15] + 0xfe2ce6e0, 10);
		MD5STEP(F4, c, d, a, b, in[6] + 0xa3014314, 15);
		MD5STEP(F4, b, c, d, a, in[13] + 0x4e0811a1, 21);
		MD5STEP(F4, a, b, c, d, in[4] + 0xf7537e82, 6);
		MD5STEP(F4, d, a, b, c, in[11] + 0xbd3af235, 10);
		MD5STEP(F4, c, d, a, b, in[2] + 0x2ad7d2bb, 15);
		MD5STEP(F4, b, c, d, a, in[9] + 0xeb86d391, 21);
	
		buf[0] += a;
		buf[1] += b;
		buf[2] += c;
		buf[3] += d;
	}
	
	
	void MyMD5(void *dest, void *orig, int len, unsigned int* key)
	{
		MD5Context context;
		MD5Init(&context, key);
		MD5Update(&context, (const unsigned char*)orig, len);
		MD5Final((unsigned char*)dest, &context);
	}
	
	
	void GenHash(const char* src, char* dest, const char* xtab, unsigned int* key)
	{
		unsigned char bytes[16];

		MyMD5((char*)bytes, (void*)src, strlen(src), key);

		for (int i = 0; i < 16; i++)
		{
			*dest++ = xtab[bytes[i] / 16];
			*dest++ = xtab[bytes[i] % 16];
		}
		*dest++ = 0;
	}

	unsigned int *key;
	char* chars;

 public:

	ModuleMD5(InspIRCd* Me)
		: Module(Me), key(NULL), chars(NULL)
	{
		ServerInstance->PublishInterface("HashRequest", this);
	}
	
	virtual ~ModuleMD5()
	{
		ServerInstance->UnpublishInterface("HashRequest", this);
	}

	void Implements(char* List)
	{
		List[I_OnRequest] = 1;
	}
	
	virtual char* OnRequest(Request* request)
	{
		HashRequest* MD5 = (HashRequest*)request;

		if (strcmp("KEY", request->GetId()) == 0)
		{
			this->key = (unsigned int*)MD5->GetKeyData();
		}
		else if (strcmp("HEX", request->GetId()) == 0)
		{
			this->chars = (char*)MD5->GetOutputs();
		}
		else if (strcmp("SUM", request->GetId()) == 0)
		{
			static char data[MAXBUF];
			GenHash((const char*)MD5->GetHashData(), data, chars ? chars : "0123456789abcdef", key);
			return data;
		}
		else if (strcmp("NAME", request->GetId()) == 0)
		{
			return "md5";
		}
		else if (strcmp("RESET", request->GetId()) == 0)
		{
			this->chars = NULL;
			this->key = NULL;
		}
		return NULL;
	}

	virtual Version GetVersion()
	{
		return Version(1,1,0,1,VF_VENDOR|VF_SERVICEPROVIDER,API_VERSION);
	}
};

MODULE_INIT(ModuleMD5)
\ No newline at end of file
+/*       +------------------------------------+
+ *       | Inspire Internet Relay Chat Daemon |
+ *       +------------------------------------+
+ *
+ *  InspIRCd: (C) 2002-2009 InspIRCd Development Team
+ * See: http://wiki.inspircd.org/Credits
+ *
+ * This program is free but copyrighted software; see
+ *            the file COPYING for details.
+ *
+ * ---------------------------------------------------
+ */
+
+/* $ModDesc: Allows for MD5 encrypted oper passwords */
+/* $ModDep: m_hash.h */
+
+#include "inspircd.h"
+#ifdef HAS_STDINT
+#include <stdint.h>
+#endif
+#include "m_hash.h"
+
+/* The four core functions - F1 is optimized somewhat */
+#define F1(x, y, z) (z ^ (x & (y ^ z)))
+#define F2(x, y, z) F1(z, x, y)
+#define F3(x, y, z) (x ^ y ^ z)
+#define F4(x, y, z) (y ^ (x | ~z))
+
+/* This is the central step in the MD5 algorithm. */
+#define MD5STEP(f,w,x,y,z,in,s) \
+	(w += f(x,y,z) + in, w = (w<<s | w>>(32-s)) + x)
+
+#ifndef HAS_STDINT
+typedef unsigned int uint32_t;
+#endif
+
+typedef uint32_t word32; /* NOT unsigned long. We don't support 16 bit platforms, anyway. */
+typedef unsigned char byte;
+
+/** An MD5 context, used by m_opermd5
+ */
+class MD5Context : public classbase
+{
+ public:
+	word32 buf[4];
+	word32 bytes[2];
+	word32 in[16];
+};
+
+class ModuleMD5 : public Module
+{
+	void byteSwap(word32 *buf, unsigned words)
+	{
+		byte *p = (byte *)buf;
+
+		do
+		{
+			*buf++ = (word32)((unsigned)p[3] << 8 | p[2]) << 16 |
+				((unsigned)p[1] << 8 | p[0]);
+			p += 4;
+		} while (--words);
+	}
+
+	void MD5Init(MD5Context *ctx, unsigned int* ikey = NULL)
+	{
+		/* These are the defaults for md5 */
+		if (!ikey)
+		{
+			ctx->buf[0] = 0x67452301;
+			ctx->buf[1] = 0xefcdab89;
+			ctx->buf[2] = 0x98badcfe;
+			ctx->buf[3] = 0x10325476;
+		}
+		else
+		{
+			ctx->buf[0] = ikey[0];
+			ctx->buf[1] = ikey[1];
+			ctx->buf[2] = ikey[2];
+			ctx->buf[3] = ikey[3];
+		}
+
+		ctx->bytes[0] = 0;
+		ctx->bytes[1] = 0;
+	}
+
+	void MD5Update(MD5Context *ctx, byte const *buf, int len)
+	{
+		word32 t;
+
+		/* Update byte count */
+
+		t = ctx->bytes[0];
+		if ((ctx->bytes[0] = t + len) < t)
+			ctx->bytes[1]++;	/* Carry from low to high */
+
+		t = 64 - (t & 0x3f);	/* Space available in ctx->in (at least 1) */
+		if ((unsigned)t > (unsigned)len)
+		{
+			memcpy((byte *)ctx->in + 64 - (unsigned)t, buf, len);
+			return;
+		}
+		/* First chunk is an odd size */
+		memcpy((byte *)ctx->in + 64 - (unsigned)t, buf, (unsigned)t);
+		byteSwap(ctx->in, 16);
+		MD5Transform(ctx->buf, ctx->in);
+		buf += (unsigned)t;
+		len -= (unsigned)t;
+
+		/* Process data in 64-byte chunks */
+		while (len >= 64)
+		{
+			memcpy(ctx->in, buf, 64);
+			byteSwap(ctx->in, 16);
+			MD5Transform(ctx->buf, ctx->in);
+			buf += 64;
+			len -= 64;
+		}
+
+		/* Handle any remaining bytes of data. */
+		memcpy(ctx->in, buf, len);
+	}
+
+	void MD5Final(byte digest[16], MD5Context *ctx)
+	{
+		int count = (int)(ctx->bytes[0] & 0x3f); /* Bytes in ctx->in */
+		byte *p = (byte *)ctx->in + count;	/* First unused byte */
+
+		/* Set the first char of padding to 0x80.  There is always room. */
+		*p++ = 0x80;
+
+		/* Bytes of padding needed to make 56 bytes (-8..55) */
+		count = 56 - 1 - count;
+
+		if (count < 0)
+		{	/* Padding forces an extra block */
+			memset(p, 0, count+8);
+			byteSwap(ctx->in, 16);
+			MD5Transform(ctx->buf, ctx->in);
+			p = (byte *)ctx->in;
+			count = 56;
+		}
+		memset(p, 0, count+8);
+		byteSwap(ctx->in, 14);
+
+		/* Append length in bits and transform */
+		ctx->in[14] = ctx->bytes[0] << 3;
+		ctx->in[15] = ctx->bytes[1] << 3 | ctx->bytes[0] >> 29;
+		MD5Transform(ctx->buf, ctx->in);
+
+		byteSwap(ctx->buf, 4);
+		memcpy(digest, ctx->buf, 16);
+		memset(ctx, 0, sizeof(ctx));
+	}
+
+	void MD5Transform(word32 buf[4], word32 const in[16])
+	{
+		register word32 a, b, c, d;
+
+		a = buf[0];
+		b = buf[1];
+		c = buf[2];
+		d = buf[3];
+
+		MD5STEP(F1, a, b, c, d, in[0] + 0xd76aa478, 7);
+		MD5STEP(F1, d, a, b, c, in[1] + 0xe8c7b756, 12);
+		MD5STEP(F1, c, d, a, b, in[2] + 0x242070db, 17);
+		MD5STEP(F1, b, c, d, a, in[3] + 0xc1bdceee, 22);
+		MD5STEP(F1, a, b, c, d, in[4] + 0xf57c0faf, 7);
+		MD5STEP(F1, d, a, b, c, in[5] + 0x4787c62a, 12);
+		MD5STEP(F1, c, d, a, b, in[6] + 0xa8304613, 17);
+		MD5STEP(F1, b, c, d, a, in[7] + 0xfd469501, 22);
+		MD5STEP(F1, a, b, c, d, in[8] + 0x698098d8, 7);
+		MD5STEP(F1, d, a, b, c, in[9] + 0x8b44f7af, 12);
+		MD5STEP(F1, c, d, a, b, in[10] + 0xffff5bb1, 17);
+		MD5STEP(F1, b, c, d, a, in[11] + 0x895cd7be, 22);
+		MD5STEP(F1, a, b, c, d, in[12] + 0x6b901122, 7);
+		MD5STEP(F1, d, a, b, c, in[13] + 0xfd987193, 12);
+		MD5STEP(F1, c, d, a, b, in[14] + 0xa679438e, 17);
+		MD5STEP(F1, b, c, d, a, in[15] + 0x49b40821, 22);
+
+		MD5STEP(F2, a, b, c, d, in[1] + 0xf61e2562, 5);
+		MD5STEP(F2, d, a, b, c, in[6] + 0xc040b340, 9);
+		MD5STEP(F2, c, d, a, b, in[11] + 0x265e5a51, 14);
+		MD5STEP(F2, b, c, d, a, in[0] + 0xe9b6c7aa, 20);
+		MD5STEP(F2, a, b, c, d, in[5] + 0xd62f105d, 5);
+		MD5STEP(F2, d, a, b, c, in[10] + 0x02441453, 9);
+		MD5STEP(F2, c, d, a, b, in[15] + 0xd8a1e681, 14);
+		MD5STEP(F2, b, c, d, a, in[4] + 0xe7d3fbc8, 20);
+		MD5STEP(F2, a, b, c, d, in[9] + 0x21e1cde6, 5);
+		MD5STEP(F2, d, a, b, c, in[14] + 0xc33707d6, 9);
+		MD5STEP(F2, c, d, a, b, in[3] + 0xf4d50d87, 14);
+		MD5STEP(F2, b, c, d, a, in[8] + 0x455a14ed, 20);
+		MD5STEP(F2, a, b, c, d, in[13] + 0xa9e3e905, 5);
+		MD5STEP(F2, d, a, b, c, in[2] + 0xfcefa3f8, 9);
+		MD5STEP(F2, c, d, a, b, in[7] + 0x676f02d9, 14);
+		MD5STEP(F2, b, c, d, a, in[12] + 0x8d2a4c8a, 20);
+
+		MD5STEP(F3, a, b, c, d, in[5] + 0xfffa3942, 4);
+		MD5STEP(F3, d, a, b, c, in[8] + 0x8771f681, 11);
+		MD5STEP(F3, c, d, a, b, in[11] + 0x6d9d6122, 16);
+		MD5STEP(F3, b, c, d, a, in[14] + 0xfde5380c, 23);
+		MD5STEP(F3, a, b, c, d, in[1] + 0xa4beea44, 4);
+		MD5STEP(F3, d, a, b, c, in[4] + 0x4bdecfa9, 11);
+		MD5STEP(F3, c, d, a, b, in[7] + 0xf6bb4b60, 16);
+		MD5STEP(F3, b, c, d, a, in[10] + 0xbebfbc70, 23);
+		MD5STEP(F3, a, b, c, d, in[13] + 0x289b7ec6, 4);
+		MD5STEP(F3, d, a, b, c, in[0] + 0xeaa127fa, 11);
+		MD5STEP(F3, c, d, a, b, in[3] + 0xd4ef3085, 16);
+		MD5STEP(F3, b, c, d, a, in[6] + 0x04881d05, 23);
+		MD5STEP(F3, a, b, c, d, in[9] + 0xd9d4d039, 4);
+		MD5STEP(F3, d, a, b, c, in[12] + 0xe6db99e5, 11);
+		MD5STEP(F3, c, d, a, b, in[15] + 0x1fa27cf8, 16);
+		MD5STEP(F3, b, c, d, a, in[2] + 0xc4ac5665, 23);
+
+		MD5STEP(F4, a, b, c, d, in[0] + 0xf4292244, 6);
+		MD5STEP(F4, d, a, b, c, in[7] + 0x432aff97, 10);
+		MD5STEP(F4, c, d, a, b, in[14] + 0xab9423a7, 15);
+		MD5STEP(F4, b, c, d, a, in[5] + 0xfc93a039, 21);
+		MD5STEP(F4, a, b, c, d, in[12] + 0x655b59c3, 6);
+		MD5STEP(F4, d, a, b, c, in[3] + 0x8f0ccc92, 10);
+		MD5STEP(F4, c, d, a, b, in[10] + 0xffeff47d, 15);
+		MD5STEP(F4, b, c, d, a, in[1] + 0x85845dd1, 21);
+		MD5STEP(F4, a, b, c, d, in[8] + 0x6fa87e4f, 6);
+		MD5STEP(F4, d, a, b, c, in[15] + 0xfe2ce6e0, 10);
+		MD5STEP(F4, c, d, a, b, in[6] + 0xa3014314, 15);
+		MD5STEP(F4, b, c, d, a, in[13] + 0x4e0811a1, 21);
+		MD5STEP(F4, a, b, c, d, in[4] + 0xf7537e82, 6);
+		MD5STEP(F4, d, a, b, c, in[11] + 0xbd3af235, 10);
+		MD5STEP(F4, c, d, a, b, in[2] + 0x2ad7d2bb, 15);
+		MD5STEP(F4, b, c, d, a, in[9] + 0xeb86d391, 21);
+
+		buf[0] += a;
+		buf[1] += b;
+		buf[2] += c;
+		buf[3] += d;
+	}
+
+
+	void MyMD5(void *dest, void *orig, int len, unsigned int* ikey)
+	{
+		MD5Context context;
+		MD5Init(&context, ikey);
+		MD5Update(&context, (const unsigned char*)orig, len);
+		MD5Final((unsigned char*)dest, &context);
+	}
+
+
+	void GenHash(const char* src, char* dest, const char* xtab, unsigned int* ikey, size_t srclen)
+	{
+		unsigned char bytes[16];
+
+		MyMD5((char*)bytes, (void*)src, srclen, ikey);
+
+		for (int i = 0; i < 16; i++)
+		{
+			*dest++ = xtab[bytes[i] / 16];
+			*dest++ = xtab[bytes[i] % 16];
+		}
+		*dest++ = 0;
+	}
+
+ public:
+
+	ModuleMD5()
+	{
+		ServerInstance->Modules->PublishInterface("HashRequest", this);
+	}
+
+	virtual ~ModuleMD5()
+	{
+		ServerInstance->Modules->UnpublishInterface("HashRequest", this);
+	}
+
+
+	void OnRequest(Request& request)
+	{
+		if (strcmp("HASH", request.id) == 0)
+		{
+			char res[16];
+			HashRequest& req = static_cast<HashRequest&>(request);
+			MyMD5(res, (void*)req.data.data(), req.data.length(), NULL);
+			req.binresult.assign(res, 16);
+		}
+		else if (strcmp("HASH-IV", request.id) == 0)
+		{
+			char res[33];
+			HashRequestIV& req = static_cast<HashRequestIV&>(request);
+			GenHash(req.data.data(), res, req.map, req.iv, req.data.length());
+			req.result = res;
+		}
+		else if (strcmp("NAME", request.id) == 0)
+		{
+			static_cast<HashNameRequest&>(request).response = "md5";
+		}
+	}
+
+	Version GetVersion()
+	{
+		return Version("Allows for MD5 encrypted oper passwords",VF_VENDOR|VF_SERVICEPROVIDER);
+	}
+};
+
+MODULE_INIT(ModuleMD5)