Imported from /home/lorry/working-area/delta_php2/php-5.4.13.tar.bz2.HEADphp-5.4.13master

1 files changed, 704 insertions, 0 deletions

diff --git a/ext/hash/hash_md.c b/ext/hash/hash_md.c
new file mode 100644
index 0000000..25165ee
--- /dev/null
+++ b/ext/hash/hash_md.c
@@ -0,0 +1,704 @@
+/*
+  +----------------------------------------------------------------------+
+  | PHP Version 5                                                        |
+  +----------------------------------------------------------------------+
+  | Copyright (c) 1997-2013 The PHP Group                                |
+  +----------------------------------------------------------------------+
+  | This source file is subject to version 3.01 of the PHP license,      |
+  | that is bundled with this package in the file LICENSE, and is        |
+  | available through the world-wide-web at the following url:           |
+  | http://www.php.net/license/3_01.txt                                  |
+  | If you did not receive a copy of the PHP license and are unable to   |
+  | obtain it through the world-wide-web, please send a note to          |
+  | license@php.net so we can mail you a copy immediately.               |
+  +----------------------------------------------------------------------+
+  | Taken from: ext/standard/md5.c                                       |
+  +----------------------------------------------------------------------+
+*/
+
+/* $Id$ */
+
+#include "php_hash.h"
+#include "php_hash_md.h"
+
+const php_hash_ops php_hash_md5_ops = {
+	(php_hash_init_func_t) PHP_MD5Init,
+	(php_hash_update_func_t) PHP_MD5Update,
+	(php_hash_final_func_t) PHP_MD5Final,
+	(php_hash_copy_func_t) php_hash_copy,
+	16,
+	64,
+	sizeof(PHP_MD5_CTX)
+};
+
+const php_hash_ops php_hash_md4_ops = {
+	(php_hash_init_func_t) PHP_MD4Init,
+	(php_hash_update_func_t) PHP_MD4Update,
+	(php_hash_final_func_t) PHP_MD4Final,
+	(php_hash_copy_func_t) php_hash_copy,
+	16,
+	64,
+	sizeof(PHP_MD4_CTX)
+};
+
+const php_hash_ops php_hash_md2_ops = {
+	(php_hash_init_func_t) PHP_MD2Init,
+	(php_hash_update_func_t) PHP_MD2Update,
+	(php_hash_final_func_t) PHP_MD2Final,
+	(php_hash_copy_func_t) php_hash_copy,
+	16,
+	16,
+	sizeof(PHP_MD2_CTX)
+};
+
+/* MD common stuff */
+
+static const unsigned char PADDING[64] =
+{
+	0x80, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
+};
+
+/* {{{ Encode
+   Encodes input (php_hash_uint32) into output (unsigned char). Assumes len is
+   a multiple of 4.
+ */
+static void Encode(unsigned char *output, php_hash_uint32 *input, unsigned int len)
+{
+	unsigned int i, j;
+
+	for (i = 0, j = 0; j < len; i++, j += 4) {
+		output[j] = (unsigned char) (input[i] & 0xff);
+		output[j + 1] = (unsigned char) ((input[i] >> 8) & 0xff);
+		output[j + 2] = (unsigned char) ((input[i] >> 16) & 0xff);
+		output[j + 3] = (unsigned char) ((input[i] >> 24) & 0xff);
+	}
+}
+/* }}} */
+
+/* {{{ Decode
+   Decodes input (unsigned char) into output (php_hash_uint32). Assumes len is
+   a multiple of 4.
+ */
+static void Decode(php_hash_uint32 *output, const unsigned char *input, unsigned int len)
+{
+	unsigned int i, j;
+
+	for (i = 0, j = 0; j < len; i++, j += 4)
+		output[i] = ((php_hash_uint32) input[j]) | (((php_hash_uint32) input[j + 1]) << 8) |
+			(((php_hash_uint32) input[j + 2]) << 16) | (((php_hash_uint32) input[j + 3]) << 24);
+}
+/* }}} */
+
+#ifdef PHP_HASH_MD5_NOT_IN_CORE
+
+/* MD5 */
+
+PHP_HASH_API void make_digest(char *md5str, unsigned char *digest)
+{
+	php_hash_bin2hex(md5str, digest, 16);
+	md5str[32] = '\0';
+}
+
+/* {{{ proto string md5(string str, [ bool raw_output])
+   Calculate the md5 hash of a string */
+PHP_NAMED_FUNCTION(php_if_md5)
+{
+	char *arg;
+	int arg_len;
+	zend_bool raw_output = 0;
+	char md5str[33];
+	PHP_MD5_CTX context;
+	unsigned char digest[16];
+	
+	if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "s|b", &arg, &arg_len, &raw_output) == FAILURE) {
+		return;
+	}
+	
+	md5str[0] = '\0';
+	PHP_MD5Init(&context);
+	PHP_MD5Update(&context, arg, arg_len);
+	PHP_MD5Final(digest, &context);
+	if (raw_output) {
+		RETURN_STRINGL(digest, 16, 1);
+	} else {
+		make_digest(md5str, digest);
+		RETVAL_STRING(md5str, 1);
+	}
+
+}
+/* }}} */
+
+/* {{{ proto string md5_file(string filename [, bool raw_output])
+   Calculate the md5 hash of given filename */
+PHP_NAMED_FUNCTION(php_if_md5_file)
+{
+	char          *arg;
+	int           arg_len;
+	zend_bool raw_output = 0;
+	char          md5str[33];
+	unsigned char buf[1024];
+	unsigned char digest[16];
+	PHP_MD5_CTX   context;
+	int           n;
+	php_stream    *stream;
+
+	if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "p|b", &arg, &arg_len, &raw_output) == FAILURE) {
+		return;
+	}
+	
+	stream = php_stream_open_wrapper(arg, "rb", REPORT_ERRORS, NULL);
+	if (!stream) {
+		RETURN_FALSE;
+	}
+
+	PHP_MD5Init(&context);
+
+	while ((n = php_stream_read(stream, buf, sizeof(buf))) > 0) {
+		PHP_MD5Update(&context, buf, n);
+	}
+
+	PHP_MD5Final(digest, &context);
+
+	php_stream_close(stream);
+
+	if (n<0) {
+		RETURN_FALSE;
+	}
+
+	if (raw_output) {
+		RETURN_STRINGL(digest, 16, 1);
+	} else {
+		make_digest(md5str, digest);
+		RETVAL_STRING(md5str, 1);
+	}
+}
+/* }}} */
+
+/*
+ * The remaining code is the reference MD5 code (md5c.c) from rfc1321
+ */
+/* MD5C.C - RSA Data Security, Inc., MD5 message-digest algorithm
+ */
+
+/* Copyright (C) 1991-2, RSA Data Security, Inc. Created 1991. All
+   rights reserved.
+
+   License to copy and use this software is granted provided that it
+   is identified as the "RSA Data Security, Inc. MD5 Message-Digest
+   Algorithm" in all material mentioning or referencing this software
+   or this function.
+
+   License is also granted to make and use derivative works provided
+   that such works are identified as "derived from the RSA Data
+   Security, Inc. MD5 Message-Digest Algorithm" in all material
+   mentioning or referencing the derived work.
+
+   RSA Data Security, Inc. makes no representations concerning either
+   the merchantability of this software or the suitability of this
+   software for any particular purpose. It is provided "as is"
+   without express or implied warranty of any kind.
+
+   These notices must be retained in any copies of any part of this
+   documentation and/or software.
+ */
+
+/* Constants for MD5Transform routine.
+ */
+
+#define S11 7
+#define S12 12
+#define S13 17
+#define S14 22
+#define S21 5
+#define S22 9
+#define S23 14
+#define S24 20
+#define S31 4
+#define S32 11
+#define S33 16
+#define S34 23
+#define S41 6
+#define S42 10
+#define S43 15
+#define S44 21
+
+static void MD5Transform(php_hash_uint32[4], const unsigned char[64]);
+
+/* F, G, H and I are basic MD5 functions.
+ */
+#define F(x, y, z) (((x) & (y)) | ((~x) & (z)))
+#define G(x, y, z) (((x) & (z)) | ((y) & (~z)))
+#define H(x, y, z) ((x) ^ (y) ^ (z))
+#define I(x, y, z) ((y) ^ ((x) | (~z)))
+
+/* ROTATE_LEFT rotates x left n bits.
+ */
+#define ROTATE_LEFT(x, n) (((x) << (n)) | ((x) >> (32-(n))))
+
+/* FF, GG, HH, and II transformations for rounds 1, 2, 3, and 4.
+   Rotation is separate from addition to prevent recomputation.
+ */
+#define FF(a, b, c, d, x, s, ac) { \
+ (a) += F ((b), (c), (d)) + (x) + (php_hash_uint32)(ac); \
+ (a) = ROTATE_LEFT ((a), (s)); \
+ (a) += (b); \
+  }
+#define GG(a, b, c, d, x, s, ac) { \
+ (a) += G ((b), (c), (d)) + (x) + (php_hash_uint32)(ac); \
+ (a) = ROTATE_LEFT ((a), (s)); \
+ (a) += (b); \
+  }
+#define HH(a, b, c, d, x, s, ac) { \
+ (a) += H ((b), (c), (d)) + (x) + (php_hash_uint32)(ac); \
+ (a) = ROTATE_LEFT ((a), (s)); \
+ (a) += (b); \
+  }
+#define II(a, b, c, d, x, s, ac) { \
+ (a) += I ((b), (c), (d)) + (x) + (php_hash_uint32)(ac); \
+ (a) = ROTATE_LEFT ((a), (s)); \
+ (a) += (b); \
+  }
+
+/* {{{ PHP_MD5Init
+ * MD5 initialization. Begins an MD5 operation, writing a new context.
+ */
+PHP_HASH_API void PHP_MD5Init(PHP_MD5_CTX * context)
+{
+	context->count[0] = context->count[1] = 0;
+	/* Load magic initialization constants.
+	 */
+	context->state[0] = 0x67452301;
+	context->state[1] = 0xefcdab89;
+	context->state[2] = 0x98badcfe;
+	context->state[3] = 0x10325476;
+}
+/* }}} */
+
+/* {{{ PHP_MD5Update
+   MD5 block update operation. Continues an MD5 message-digest
+   operation, processing another message block, and updating the
+   context.
+ */
+PHP_HASH_API void PHP_MD5Update(PHP_MD5_CTX * context, const unsigned char *input,
+			   unsigned int inputLen)
+{
+	unsigned int i, index, partLen;
+
+	/* Compute number of bytes mod 64 */
+	index = (unsigned int) ((context->count[0] >> 3) & 0x3F);
+
+	/* Update number of bits */
+	if ((context->count[0] += ((php_hash_uint32) inputLen << 3))
+		< ((php_hash_uint32) inputLen << 3))
+		context->count[1]++;
+	context->count[1] += ((php_hash_uint32) inputLen >> 29);
+
+	partLen = 64 - index;
+
+	/* Transform as many times as possible.
+	 */
+	if (inputLen >= partLen) {
+		memcpy
+			((unsigned char*) & context->buffer[index], (unsigned char*) input, partLen);
+		MD5Transform(context->state, context->buffer);
+
+		for (i = partLen; i + 63 < inputLen; i += 64)
+			MD5Transform(context->state, &input[i]);
+
+		index = 0;
+	} else
+		i = 0;
+
+	/* Buffer remaining input */
+	memcpy
+		((unsigned char*) & context->buffer[index], (unsigned char*) & input[i],
+		 inputLen - i);
+}
+/* }}} */
+
+/* {{{ PHP_MD5Final
+   MD5 finalization. Ends an MD5 message-digest operation, writing the
+   the message digest and zeroizing the context.
+ */
+PHP_HASH_API void PHP_MD5Final(unsigned char digest[16], PHP_MD5_CTX * context)
+{
+	unsigned char bits[8];
+	unsigned int index, padLen;
+
+	/* Save number of bits */
+	Encode(bits, context->count, 8);
+
+	/* Pad out to 56 mod 64.
+	 */
+	index = (unsigned int) ((context->count[0] >> 3) & 0x3f);
+	padLen = (index < 56) ? (56 - index) : (120 - index);
+	PHP_MD5Update(context, PADDING, padLen);
+
+	/* Append length (before padding) */
+	PHP_MD5Update(context, bits, 8);
+
+	/* Store state in digest */
+	Encode(digest, context->state, 16);
+
+	/* Zeroize sensitive information.
+	 */
+	memset((unsigned char*) context, 0, sizeof(*context));
+}
+/* }}} */
+
+/* {{{ MD5Transform
+ * MD5 basic transformation. Transforms state based on block.
+ */
+static void MD5Transform(state, block)
+php_hash_uint32 state[4];
+const unsigned char block[64];
+{
+	php_hash_uint32 a = state[0], b = state[1], c = state[2], d = state[3], x[16];
+
+	Decode(x, block, 64);
+
+	/* Round 1 */
+	FF(a, b, c, d, x[0], S11, 0xd76aa478);	/* 1 */
+	FF(d, a, b, c, x[1], S12, 0xe8c7b756);	/* 2 */
+	FF(c, d, a, b, x[2], S13, 0x242070db);	/* 3 */
+	FF(b, c, d, a, x[3], S14, 0xc1bdceee);	/* 4 */
+	FF(a, b, c, d, x[4], S11, 0xf57c0faf);	/* 5 */
+	FF(d, a, b, c, x[5], S12, 0x4787c62a);	/* 6 */
+	FF(c, d, a, b, x[6], S13, 0xa8304613);	/* 7 */
+	FF(b, c, d, a, x[7], S14, 0xfd469501);	/* 8 */
+	FF(a, b, c, d, x[8], S11, 0x698098d8);	/* 9 */
+	FF(d, a, b, c, x[9], S12, 0x8b44f7af);	/* 10 */
+	FF(c, d, a, b, x[10], S13, 0xffff5bb1);		/* 11 */
+	FF(b, c, d, a, x[11], S14, 0x895cd7be);		/* 12 */
+	FF(a, b, c, d, x[12], S11, 0x6b901122);		/* 13 */
+	FF(d, a, b, c, x[13], S12, 0xfd987193);		/* 14 */
+	FF(c, d, a, b, x[14], S13, 0xa679438e);		/* 15 */
+	FF(b, c, d, a, x[15], S14, 0x49b40821);		/* 16 */
+
+	/* Round 2 */
+	GG(a, b, c, d, x[1], S21, 0xf61e2562);	/* 17 */
+	GG(d, a, b, c, x[6], S22, 0xc040b340);	/* 18 */
+	GG(c, d, a, b, x[11], S23, 0x265e5a51);		/* 19 */
+	GG(b, c, d, a, x[0], S24, 0xe9b6c7aa);	/* 20 */
+	GG(a, b, c, d, x[5], S21, 0xd62f105d);	/* 21 */
+	GG(d, a, b, c, x[10], S22, 0x2441453);	/* 22 */
+	GG(c, d, a, b, x[15], S23, 0xd8a1e681);		/* 23 */
+	GG(b, c, d, a, x[4], S24, 0xe7d3fbc8);	/* 24 */
+	GG(a, b, c, d, x[9], S21, 0x21e1cde6);	/* 25 */
+	GG(d, a, b, c, x[14], S22, 0xc33707d6);		/* 26 */
+	GG(c, d, a, b, x[3], S23, 0xf4d50d87);	/* 27 */
+	GG(b, c, d, a, x[8], S24, 0x455a14ed);	/* 28 */
+	GG(a, b, c, d, x[13], S21, 0xa9e3e905);		/* 29 */
+	GG(d, a, b, c, x[2], S22, 0xfcefa3f8);	/* 30 */
+	GG(c, d, a, b, x[7], S23, 0x676f02d9);	/* 31 */
+	GG(b, c, d, a, x[12], S24, 0x8d2a4c8a);		/* 32 */
+
+	/* Round 3 */
+	HH(a, b, c, d, x[5], S31, 0xfffa3942);	/* 33 */
+	HH(d, a, b, c, x[8], S32, 0x8771f681);	/* 34 */
+	HH(c, d, a, b, x[11], S33, 0x6d9d6122);		/* 35 */
+	HH(b, c, d, a, x[14], S34, 0xfde5380c);		/* 36 */
+	HH(a, b, c, d, x[1], S31, 0xa4beea44);	/* 37 */
+	HH(d, a, b, c, x[4], S32, 0x4bdecfa9);	/* 38 */
+	HH(c, d, a, b, x[7], S33, 0xf6bb4b60);	/* 39 */
+	HH(b, c, d, a, x[10], S34, 0xbebfbc70);		/* 40 */
+	HH(a, b, c, d, x[13], S31, 0x289b7ec6);		/* 41 */
+	HH(d, a, b, c, x[0], S32, 0xeaa127fa);	/* 42 */
+	HH(c, d, a, b, x[3], S33, 0xd4ef3085);	/* 43 */
+	HH(b, c, d, a, x[6], S34, 0x4881d05);	/* 44 */
+	HH(a, b, c, d, x[9], S31, 0xd9d4d039);	/* 45 */
+	HH(d, a, b, c, x[12], S32, 0xe6db99e5);		/* 46 */
+	HH(c, d, a, b, x[15], S33, 0x1fa27cf8);		/* 47 */
+	HH(b, c, d, a, x[2], S34, 0xc4ac5665);	/* 48 */
+
+	/* Round 4 */
+	II(a, b, c, d, x[0], S41, 0xf4292244);	/* 49 */
+	II(d, a, b, c, x[7], S42, 0x432aff97);	/* 50 */
+	II(c, d, a, b, x[14], S43, 0xab9423a7);		/* 51 */
+	II(b, c, d, a, x[5], S44, 0xfc93a039);	/* 52 */
+	II(a, b, c, d, x[12], S41, 0x655b59c3);		/* 53 */
+	II(d, a, b, c, x[3], S42, 0x8f0ccc92);	/* 54 */
+	II(c, d, a, b, x[10], S43, 0xffeff47d);		/* 55 */
+	II(b, c, d, a, x[1], S44, 0x85845dd1);	/* 56 */
+	II(a, b, c, d, x[8], S41, 0x6fa87e4f);	/* 57 */
+	II(d, a, b, c, x[15], S42, 0xfe2ce6e0);		/* 58 */
+	II(c, d, a, b, x[6], S43, 0xa3014314);	/* 59 */
+	II(b, c, d, a, x[13], S44, 0x4e0811a1);		/* 60 */
+	II(a, b, c, d, x[4], S41, 0xf7537e82);	/* 61 */
+	II(d, a, b, c, x[11], S42, 0xbd3af235);		/* 62 */
+	II(c, d, a, b, x[2], S43, 0x2ad7d2bb);	/* 63 */
+	II(b, c, d, a, x[9], S44, 0xeb86d391);	/* 64 */
+
+	state[0] += a;
+	state[1] += b;
+	state[2] += c;
+	state[3] += d;
+
+	/* Zeroize sensitive information. */
+	memset((unsigned char*) x, 0, sizeof(x));
+}
+/* }}} */
+
+#endif /* PHP_HASH_MD5_NOT_IN_CORE */
+
+/* MD4 */
+
+#define MD4_F(x,y,z)			((z) ^ ((x) & ((y) ^ (z))))
+#define MD4_G(x,y,z)			(((x) & ((y) | (z))) | ((y) & (z)))
+#define MD4_H(x,y,z)			((x) ^ (y) ^ (z))
+
+#define ROTL32(s,v)				(((v) << (s)) | ((v) >> (32 - (s))))
+
+#define MD4_R1(a,b,c,d,k,s)		a = ROTL32(s, a + MD4_F(b,c,d) + x[k])
+#define MD4_R2(a,b,c,d,k,s)		a = ROTL32(s, a + MD4_G(b,c,d) + x[k] + 0x5A827999)
+#define MD4_R3(a,b,c,d,k,s)		a = ROTL32(s, a + MD4_H(b,c,d) + x[k] + 0x6ED9EBA1)
+
+static void MD4Transform(php_hash_uint32 state[4], const unsigned char block[64])
+{
+	php_hash_uint32 a = state[0], b = state[1], c = state[2], d = state[3], x[16];
+
+	Decode(x, block, 64);
+
+	/* Round 1 */
+	MD4_R1(a,b,c,d, 0, 3);
+	MD4_R1(d,a,b,c, 1, 7);
+	MD4_R1(c,d,a,b, 2,11);
+	MD4_R1(b,c,d,a, 3,19);
+	MD4_R1(a,b,c,d, 4, 3);
+	MD4_R1(d,a,b,c, 5, 7);
+	MD4_R1(c,d,a,b, 6,11);
+	MD4_R1(b,c,d,a, 7,19);
+	MD4_R1(a,b,c,d, 8, 3);
+	MD4_R1(d,a,b,c, 9, 7);
+	MD4_R1(c,d,a,b,10,11);
+	MD4_R1(b,c,d,a,11,19);
+	MD4_R1(a,b,c,d,12, 3);
+	MD4_R1(d,a,b,c,13, 7);
+	MD4_R1(c,d,a,b,14,11);
+	MD4_R1(b,c,d,a,15,19);
+
+	/* Round 2 */
+	MD4_R2(a,b,c,d, 0, 3);
+	MD4_R2(d,a,b,c, 4, 5);
+	MD4_R2(c,d,a,b, 8, 9);
+	MD4_R2(b,c,d,a,12,13);
+	MD4_R2(a,b,c,d, 1, 3);
+	MD4_R2(d,a,b,c, 5, 5);
+	MD4_R2(c,d,a,b, 9, 9);
+	MD4_R2(b,c,d,a,13,13);
+	MD4_R2(a,b,c,d, 2, 3);
+	MD4_R2(d,a,b,c, 6, 5);
+	MD4_R2(c,d,a,b,10, 9);
+	MD4_R2(b,c,d,a,14,13);
+	MD4_R2(a,b,c,d, 3, 3);
+	MD4_R2(d,a,b,c, 7, 5);
+	MD4_R2(c,d,a,b,11, 9);
+	MD4_R2(b,c,d,a,15,13);
+
+	/* Round 3 */
+	MD4_R3(a,b,c,d, 0, 3);
+	MD4_R3(d,a,b,c, 8, 9);
+	MD4_R3(c,d,a,b, 4,11);
+	MD4_R3(b,c,d,a,12,15);
+	MD4_R3(a,b,c,d, 2, 3);
+	MD4_R3(d,a,b,c,10, 9);
+	MD4_R3(c,d,a,b, 6,11);
+	MD4_R3(b,c,d,a,14,15);
+	MD4_R3(a,b,c,d, 1, 3);
+	MD4_R3(d,a,b,c, 9, 9);
+	MD4_R3(c,d,a,b, 5,11);
+	MD4_R3(b,c,d,a,13,15);
+	MD4_R3(a,b,c,d, 3, 3);
+	MD4_R3(d,a,b,c,11, 9);
+	MD4_R3(c,d,a,b, 7,11);
+	MD4_R3(b,c,d,a,15,15);
+
+	state[0] += a;
+	state[1] += b;
+	state[2] += c;
+	state[3] += d;
+}
+
+/* {{{ PHP_MD4Init
+ * MD4 initialization. Begins an MD4 operation, writing a new context.
+ */
+PHP_HASH_API void PHP_MD4Init(PHP_MD4_CTX * context)
+{
+	context->count[0] = context->count[1] = 0;
+	/* Load magic initialization constants.
+	 */
+	context->state[0] = 0x67452301;
+	context->state[1] = 0xefcdab89;
+	context->state[2] = 0x98badcfe;
+	context->state[3] = 0x10325476;
+}
+/* }}} */
+
+/* {{{ PHP_MD4Update
+   MD4 block update operation. Continues an MD4 message-digest
+   operation, processing another message block, and updating the
+   context.
+ */
+PHP_HASH_API void PHP_MD4Update(PHP_MD4_CTX * context, const unsigned char *input, unsigned int inputLen)
+{
+	unsigned int i, index, partLen;
+
+	/* Compute number of bytes mod 64 */
+	index = (unsigned int) ((context->count[0] >> 3) & 0x3F);
+
+	/* Update number of bits */
+	if ((context->count[0] += ((php_hash_uint32) inputLen << 3))
+		< ((php_hash_uint32) inputLen << 3))
+		context->count[1]++;
+	context->count[1] += ((php_hash_uint32) inputLen >> 29);
+
+	partLen = 64 - index;
+
+	/* Transform as many times as possible.
+	 */
+	if (inputLen >= partLen) {
+		memcpy((unsigned char*) & context->buffer[index], (unsigned char*) input, partLen);
+		MD4Transform(context->state, context->buffer);
+
+		for (i = partLen; i + 63 < inputLen; i += 64) {
+			MD4Transform(context->state, &input[i]);
+		}
+
+		index = 0;
+	} else {
+		i = 0;
+	}
+
+	/* Buffer remaining input */
+	memcpy((unsigned char*) & context->buffer[index], (unsigned char*) & input[i], inputLen - i);
+}
+/* }}} */
+
+/* {{{ PHP_MD4Final
+   MD4 finalization. Ends an MD4 message-digest operation, writing the
+   the message digest and zeroizing the context.
+ */
+PHP_HASH_API void PHP_MD4Final(unsigned char digest[16], PHP_MD4_CTX * context)
+{
+	unsigned char bits[8];
+	unsigned int index, padLen;
+
+	/* Save number of bits */
+	Encode(bits, context->count, 8);
+
+	/* Pad out to 56 mod 64.
+	 */
+	index = (unsigned int) ((context->count[0] >> 3) & 0x3f);
+	padLen = (index < 56) ? (56 - index) : (120 - index);
+	PHP_MD4Update(context, PADDING, padLen);
+
+	/* Append length (before padding) */
+	PHP_MD4Update(context, bits, 8);
+
+	/* Store state in digest */
+	Encode(digest, context->state, 16);
+
+	/* Zeroize sensitive information.
+	 */
+	memset((unsigned char*) context, 0, sizeof(*context));
+}
+/* }}} */
+
+/* MD2 */
+
+static const unsigned char MD2_S[256] = {
+	 41,  46,  67, 201, 162, 216, 124,   1,  61,  54,  84, 161, 236, 240,   6,  19,
+	 98, 167,   5, 243, 192, 199, 115, 140, 152, 147,  43, 217, 188,  76, 130, 202,
+	 30, 155,  87,  60, 253, 212, 224,  22, 103,  66, 111,  24, 138,  23, 229,  18,
+	190,  78, 196, 214, 218, 158, 222,  73, 160, 251, 245, 142, 187,  47, 238, 122,
+	169, 104, 121, 145,  21, 178,   7,  63, 148, 194,  16, 137,  11,  34,  95,  33,
+	128, 127,  93, 154,  90, 144,  50,  39,  53,  62, 204, 231, 191, 247, 151,   3,
+	255,  25,  48, 179,  72, 165, 181, 209, 215,  94, 146,  42, 172,  86, 170, 198,
+	 79, 184,  56, 210, 150, 164, 125, 182, 118, 252, 107, 226, 156, 116,   4, 241,
+	 69, 157, 112,  89, 100, 113, 135,  32, 134,  91, 207, 101, 230,  45, 168,   2,
+	 27,  96,  37, 173, 174, 176, 185, 246,  28,  70,  97, 105,  52,  64, 126,  15,
+	 85,  71, 163,  35, 221,  81, 175,  58, 195,  92, 249, 206, 186, 197, 234,  38,
+	 44,  83,  13, 110, 133,  40, 132,   9, 211, 223, 205, 244,  65, 129,  77,  82,
+	106, 220,  55, 200, 108, 193, 171, 250,  36, 225, 123,   8,  12, 189, 177,  74,
+	120, 136, 149, 139, 227,  99, 232, 109, 233, 203, 213, 254,  59,   0,  29,  57,
+	242, 239, 183,  14, 102,  88, 208, 228, 166, 119, 114, 248, 235, 117,  75,  10,
+	 49,  68,  80, 180, 143, 237,  31,  26, 219, 153, 141,  51, 159,  17, 131,  20 };
+
+PHP_HASH_API void PHP_MD2Init(PHP_MD2_CTX *context)
+{
+	memset(context, 0, sizeof(PHP_MD2_CTX));
+}
+
+static void MD2_Transform(PHP_MD2_CTX *context, const unsigned char *block)
+{
+	unsigned char i,j,t = 0;
+
+	for(i = 0; i < 16; i++) {
+		context->state[16+i] = block[i];
+		context->state[32+i] = (context->state[16+i] ^ context->state[i]);
+	}
+
+	for(i = 0; i < 18; i++) {
+		for(j = 0; j < 48; j++) {
+			t = context->state[j] = context->state[j] ^ MD2_S[t];
+		}
+		t += i;
+	}
+
+	/* Update checksum -- must be after transform to avoid fouling up last message block */
+	t = context->checksum[15];
+	for(i = 0; i < 16; i++) {
+		t = context->checksum[i] ^= MD2_S[block[i] ^ t];
+	}
+}
+
+PHP_HASH_API void PHP_MD2Update(PHP_MD2_CTX *context, const unsigned char *buf, unsigned int len)
+{
+	const unsigned char *p = buf, *e = buf + len;
+
+	if (context->in_buffer) {
+		if (context->in_buffer + len < 16) {
+			/* Not enough for block, just pass into buffer */
+			memcpy(context->buffer + context->in_buffer, p, len);
+			context->in_buffer += len;
+			return;
+		}
+		/* Put buffered data together with inbound for a single block */
+		memcpy(context->buffer + context->in_buffer, p, 16 - context->in_buffer);
+		MD2_Transform(context, context->buffer);
+		p += 16 - context->in_buffer;
+		context->in_buffer = 0;
+	}
+
+	/* Process as many whole blocks as remain */
+	while ((p + 16) <= e) {
+		MD2_Transform(context, p);
+		p += 16;
+	}
+
+	/* Copy remaining data to buffer */
+	if (p < e) {
+		memcpy(context->buffer, p, e - p);
+		context->in_buffer = e - p;
+	}
+}
+
+PHP_HASH_API void PHP_MD2Final(unsigned char output[16], PHP_MD2_CTX *context)
+{
+	memset(context->buffer + context->in_buffer, 16 - context->in_buffer, 16 - context->in_buffer);
+	MD2_Transform(context, context->buffer);
+	MD2_Transform(context, context->checksum);
+
+	memcpy(output, context->state, 16);
+}
+
+/*
+ * Local variables:
+ * tab-width: 4
+ * c-basic-offset: 4
+ * End:
+ * vim600: sw=4 ts=4 fdm=marker
+ * vim<600: sw=4 ts=4
+ */