Added MD5 support for crypt() on Windows.

1 files changed, 163 insertions, 0 deletions

diff --git a/win32/md5crypt.c b/win32/md5crypt.c
new file mode 100644
index 0000000000..337cc90a8c
--- /dev/null
+++ b/win32/md5crypt.c
@@ -0,0 +1,163 @@
+/*
+   +----------------------------------------------------------------------+
+   | PHP Version 4                                                        |
+   +----------------------------------------------------------------------+
+   | Copyright (c) 1997-2002 The PHP Group                                |
+   +----------------------------------------------------------------------+
+   | This source file is subject to version 2.02 of the PHP license,      |
+   | that is bundled with this package in the file LICENSE, and is        |
+   | available at through the world-wide-web at                           |
+   | http://www.php.net/license/2_02.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.               |
+   +----------------------------------------------------------------------+
+   | Author: Edin Kadribasic                                                             |
+   +----------------------------------------------------------------------+
+ */
+
+/* $Id$ */
+
+/*
+ * ----------------------------------------------------------------------------
+ * "THE BEER-WARE LICENSE" (Revision 42):
+ * <phk@login.dknet.dk> wrote this file.  As long as you retain this notice you
+ * can do whatever you want with this stuff. If we meet some day, and you think
+ * this stuff is worth it, you can buy me a beer in return.   Poul-Henning Kamp
+ * ----------------------------------------------------------------------------
+ *
+ * from FreeBSD: crypt.c,v 1.5 1996/10/14 08:34:02 phk Exp
+ * via OpenBSD: md5crypt.c,v 1.9 1997/07/23 20:58:27 kstailey Exp
+ * via NetBSD: md5crypt.c,v 1.4.2.1 2002/01/22 19:31:59 he Exp
+ *
+ */
+
+#include "php.h"
+#include "ext/standard/md5.h"
+#include "md5crypt.h"
+
+static unsigned char itoa64[] =		/* 0 ... 63 => ascii - 64 */
+	"./0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
+
+static void to64(char *, php_uint32, int);
+
+static void
+to64(char *s, php_uint32 v, int n)
+{
+
+	while (--n >= 0) {
+		*s++ = itoa64[v & 0x3f];
+		v >>= 6;
+	}
+}
+
+/*
+ * MD5 password encryption.
+ */
+char *
+md5_crypt(const char *pw, const char *salt)
+{
+	static char passwd[120], *p;
+	const char *sp, *ep;
+	unsigned char final[16];
+	unsigned int i, sl, pwl;
+	PHP_MD5_CTX	ctx, ctx1;
+	php_uint32 l;
+	int pl;
+	
+	pwl = strlen(pw);
+	
+	/* Refine the salt first */
+	sp = salt;
+
+	/* If it starts with the magic string, then skip that */
+	if (strncmp(sp, MD5_MAGIC, MD5_MAGIC_LEN) == 0)
+		sp += MD5_MAGIC_LEN;
+
+	/* It stops at the first '$', max 8 chars */
+	for (ep = sp; *ep != '\0' && *ep != '$' && ep < (sp + 8); ep++)
+		continue;
+
+	/* get the length of the true salt */
+	sl = ep - sp;
+
+	PHP_MD5Init(&ctx);
+
+	/* The password first, since that is what is most unknown */
+	PHP_MD5Update(&ctx, (const unsigned char *)pw, pwl);
+
+	/* Then our magic string */
+	PHP_MD5Update(&ctx, (const unsigned char *)MD5_MAGIC, MD5_MAGIC_LEN);
+
+	/* Then the raw salt */
+	PHP_MD5Update(&ctx, (const unsigned char *)sp, sl);
+
+	/* Then just as many characters of the MD5(pw,salt,pw) */
+	PHP_MD5Init(&ctx1);
+	PHP_MD5Update(&ctx1, (const unsigned char *)pw, pwl);
+	PHP_MD5Update(&ctx1, (const unsigned char *)sp, sl);
+	PHP_MD5Update(&ctx1, (const unsigned char *)pw, pwl);
+	PHP_MD5Final(final, &ctx1);
+
+	for (pl = pwl; pl > 0; pl -= 16)
+		PHP_MD5Update(&ctx, final, (unsigned int)(pl > 16 ? 16 : pl));
+
+	/* Don't leave anything around in vm they could use. */
+	memset(final, 0, sizeof(final));
+
+	/* Then something really weird... */
+	for (i = pwl; i != 0; i >>= 1)
+		if ((i & 1) != 0)
+		    PHP_MD5Update(&ctx, final, 1);
+		else
+		    PHP_MD5Update(&ctx, (const unsigned char *)pw, 1);
+
+	/* Now make the output string */
+	memcpy(passwd, MD5_MAGIC, MD5_MAGIC_LEN);
+	strlcpy(passwd + MD5_MAGIC_LEN, sp, sl + 1);
+	strcat(passwd, "$");
+
+	PHP_MD5Final(final, &ctx);
+
+	/*
+	 * And now, just to make sure things don't run too fast. On a 60 MHz
+	 * Pentium this takes 34 msec, so you would need 30 seconds to build
+	 * a 1000 entry dictionary...
+	 */
+	for (i = 0; i < 1000; i++) {
+		PHP_MD5Init(&ctx1);
+
+		if ((i & 1) != 0)
+			PHP_MD5Update(&ctx1, (const unsigned char *)pw, pwl);
+		else
+			PHP_MD5Update(&ctx1, final, 16);
+
+		if ((i % 3) != 0)
+			PHP_MD5Update(&ctx1, (const unsigned char *)sp, sl);
+
+		if ((i % 7) != 0)
+			PHP_MD5Update(&ctx1, (const unsigned char *)pw, pwl);
+
+		if ((i & 1) != 0)
+			PHP_MD5Update(&ctx1, final, 16);
+		else
+			PHP_MD5Update(&ctx1, (const unsigned char *)pw, pwl);
+
+		PHP_MD5Final(final, &ctx1);
+	}
+
+	p = passwd + sl + MD5_MAGIC_LEN + 1;
+
+	l = (final[ 0]<<16) | (final[ 6]<<8) | final[12]; to64(p,l,4); p += 4;
+	l = (final[ 1]<<16) | (final[ 7]<<8) | final[13]; to64(p,l,4); p += 4;
+	l = (final[ 2]<<16) | (final[ 8]<<8) | final[14]; to64(p,l,4); p += 4;
+	l = (final[ 3]<<16) | (final[ 9]<<8) | final[15]; to64(p,l,4); p += 4;
+	l = (final[ 4]<<16) | (final[10]<<8) | final[ 5]; to64(p,l,4); p += 4;
+	l =		       final[11]		; to64(p,l,2); p += 2;
+	*p = '\0';
+
+	/* Don't leave anything around in vm they could use. */
+	memset(final, 0, sizeof(final));
+	return (passwd);
+}
+