libsmb/common/smb_util.c

	smb_util.c revision dc20a3024900c47dd2ee44b9707e6df38f7d62a5
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw/*
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * CDDL HEADER START
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw *
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * The contents of this file are subject to the terms of the
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * Common Development and Distribution License (the "License").
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * You may not use this file except in compliance with the License.
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw *
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * or http://www.opensolaris.org/os/licensing.
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * See the License for the specific language governing permissions
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * and limitations under the License.
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw *
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * When distributing Covered Code, include this CDDL HEADER in each
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * If applicable, add the following below this CDDL HEADER, with the
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * fields enclosed by brackets "[]" replaced with your own identifying
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * information: Portions Copyright [yyyy] [name of copyright owner]
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw *
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * CDDL HEADER END
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw */
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw/*
dc20a3024900c47dd2ee44b9707e6df38f7d62a5as * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * Use is subject to license terms.
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw */
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw#pragma ident   "%Z%%M% %I% %E% SMI"
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw#include <ctype.h>
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw#include <stdio.h>
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw#include <string.h>
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw#include <stdlib.h>
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw#include <pthread.h>
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw#include <sys/varargs.h>
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw#include <sys/types.h>
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw#include <smbsrv/string.h>
dc20a3024900c47dd2ee44b9707e6df38f7d62a5as#include <smbsrv/libsmb.h>
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw#define C2H(c)      "0123456789ABCDEF"[(c)]
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw#define H2C(c)    (((c) >= '0' && (c) <= '9') ? ((c) - '0') :     \
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw    ((c) >= 'a' && (c) <= 'f') ? ((c) - 'a' + 10) :         \
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw    ((c) >= 'A' && (c) <= 'F') ? ((c) - 'A' + 10) :         \
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw    '\0')
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw#define DEFAULT_SBOX_SIZE       256
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw/*
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw *
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * hexdump
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw *
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * Simple hex dump display function. Displays nbytes of buffer in hex and
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * printable format. Non-printing characters are shown as '.'. It is safe
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * to pass a null pointer. Each line begins with the offset. If nbytes is
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * 0, the line will be blank except for the offset. Example output:
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw *
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * 00000000  54 68 69 73 20 69 73 20 61 20 70 72 6F 67 72 61  This is a progra
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * 00000010  6D 20 74 65 73 74 2E 00                          m test..
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw *
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw */
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amwvoid
dc20a3024900c47dd2ee44b9707e6df38f7d62a5ashexdump_offset(unsigned char *buffer, int nbytes, unsigned long *start)
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw{
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw    static char *hex = "0123456789ABCDEF";
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw    int i, count;
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw    int offset;
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw    unsigned char *p;
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw    char ascbuf[64];
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw    char hexbuf[64];
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw    char *ap = ascbuf;
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw    char *hp = hexbuf;
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw
dc20a3024900c47dd2ee44b9707e6df38f7d62a5as    if ((p = buffer) == NULL)
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw        return;
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw    offset = *start;
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw    *ap = '\0';
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw    *hp = '\0';
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw    count = 0;
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw    for (i = 0; i < nbytes; ++i) {
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw        if (i && (i % 16) == 0) {
dc20a3024900c47dd2ee44b9707e6df38f7d62a5as            smb_tracef("%06X %s  %s", offset, hexbuf, ascbuf);
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw            ap = ascbuf;
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw            hp = hexbuf;
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw            count = 0;
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw            offset += 16;
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw        }
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw        ap += sprintf(ap, "%c",
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw            (*p >= 0x20 && *p < 0x7F) ? *p : '.');
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw        hp += sprintf(hp, " %c%c",
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw            hex[(*p >> 4) & 0x0F], hex[(*p & 0x0F)]);
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw        ++p;
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw        ++count;
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw    }
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw    if (count) {
dc20a3024900c47dd2ee44b9707e6df38f7d62a5as        smb_tracef("%06X %-48s  %s", offset, hexbuf, ascbuf);
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw        offset += count;
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw    }
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw    *start = offset;
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw}
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amwvoid
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amwhexdump(unsigned char *buffer, int nbytes)
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw{
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw    unsigned long start = 0;
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw
dc20a3024900c47dd2ee44b9707e6df38f7d62a5as    hexdump_offset(buffer, nbytes, &start);
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw}
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw/*
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * bintohex
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw *
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * Converts the given binary data (srcbuf) to
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * its equivalent hex chars (hexbuf).
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw *
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * hexlen should be at least twice as srclen.
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * if hexbuf is not big enough returns 0.
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * otherwise returns number of valid chars in
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * hexbuf which is srclen * 2.
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw */
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amwsize_t
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amwbintohex(const char *srcbuf, size_t srclen,
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw    char *hexbuf, size_t hexlen)
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw{
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw    size_t outlen;
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw    char c;
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw    outlen = srclen << 1;
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw    if (hexlen < outlen)
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw        return (0);
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw    while (srclen-- > 0) {
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw        c = *srcbuf++;
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw        *hexbuf++ = C2H(c & 0xF);
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw        *hexbuf++ = C2H((c >> 4) & 0xF);
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw    }
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw    return (outlen);
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw}
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw/*
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * hextobin
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw *
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * Converts hex to binary.
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw *
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * Assuming hexbuf only contains hex digits (chars)
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * this function convert every two bytes of hexbuf
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * to one byte and put it in dstbuf.
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw *
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * hexlen should be an even number.
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * dstlen should be at least half of hexlen.
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw *
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * Returns 0 if sizes are not correct, otherwise
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * returns the number of converted bytes in dstbuf
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * which is half of hexlen.
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw */
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amwsize_t
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amwhextobin(const char *hexbuf, size_t hexlen,
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw    char *dstbuf, size_t dstlen)
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw{
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw    size_t outlen;
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw    if ((hexlen % 2) != 0)
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw        return (0);
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw    outlen = hexlen >> 1;
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw    if (dstlen < outlen)
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw        return (0);
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw    while (hexlen > 0) {
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw        *dstbuf = H2C(*hexbuf) & 0x0F;
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw        hexbuf++;
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw        *dstbuf++ |= (H2C(*hexbuf) << 4) & 0xF0;
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw        hexbuf++;
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw        hexlen -= 2;
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw    }
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw    return (outlen);
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw}
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw/*
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * trim_whitespace
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw *
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * Trim leading and trailing whitespace chars (as defined by isspace)
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * from a buffer. Example; if the input buffer contained "  text  ",
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * it will contain "text", when we return. We assume that the buffer
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * contains a null terminated string. A pointer to the buffer is
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * returned.
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw */
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amwchar *
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amwtrim_whitespace(char *buf)
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw{
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw    char *p = buf;
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw    char *q = buf;
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw
dc20a3024900c47dd2ee44b9707e6df38f7d62a5as    if (buf == NULL)
dc20a3024900c47dd2ee44b9707e6df38f7d62a5as        return (NULL);
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw    while (*p && isspace(*p))
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw        ++p;
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw    while ((*q = *p++) != 0)
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw        ++q;
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw    if (q != buf) {
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw        while ((--q, isspace(*q)) != 0)
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw            *q = '\0';
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw    }
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw    return (buf);
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw}
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw/*
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * randomize
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw *
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * Randomize the contents of the specified buffer.
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw */
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amwvoid
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amwrandomize(char *data, unsigned len)
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw{
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw    unsigned dwlen = len / 4;
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw    unsigned remlen = len % 4;
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw    unsigned tmp;
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw    unsigned i; /*LINTED E_BAD_PTR_CAST_ALIGN*/
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw    unsigned *p = (unsigned *)data;
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw    for (i = 0; i < dwlen; ++i)
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw        *p++ = random();
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw    if (remlen) {
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw        tmp = random();
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw        (void) memcpy(p, &tmp, remlen);
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw    }
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw}
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw/*
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * This is the hash mechanism used to encrypt passwords for commands like
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * SamrSetUserInformation. It uses a 256 byte s-box.
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw */
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amwvoid
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amwrand_hash(
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw    unsigned char *data,
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw    size_t datalen,
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw    unsigned char *key,
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw    size_t keylen)
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw{
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw    unsigned char sbox[DEFAULT_SBOX_SIZE];
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw    unsigned char tmp;
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw    unsigned char index_i = 0;
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw    unsigned char index_j = 0;
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw    unsigned char j = 0;
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw    int i;
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw    for (i = 0; i < DEFAULT_SBOX_SIZE; ++i)
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw        sbox[i] = (unsigned char)i;
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw    for (i = 0; i < DEFAULT_SBOX_SIZE; ++i) {
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw        j += (sbox[i] + key[i % keylen]);
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw        tmp = sbox[i];
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw        sbox[i] = sbox[j];
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw        sbox[j] = tmp;
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw    }
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw    for (i = 0; i < datalen; ++i) {
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw        index_i++;
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw        index_j += sbox[index_i];
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw        tmp = sbox[index_i];
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw        sbox[index_i] = sbox[index_j];
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw        sbox[index_j] = tmp;
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw        tmp = sbox[index_i] + sbox[index_j];
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw        data[i] = data[i] ^ sbox[tmp];
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw    }
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw}
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw/*
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * strsep
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw *
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * The strsep() function locates, in the string referenced by *stringp, the
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * first occurrence of any character in the string delim (or the terminating
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * `\0' character) and replaces it with a `\0'.  The location of the next
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * character after the delimiter character (or NULL, if the end of the
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * string was reached) is stored in *stringp.  The original value of
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * *stringp is returned.
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw *
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * If *stringp is initially NULL, strsep() returns NULL.
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw */
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amwchar *
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amwstrsep(char **stringp, const char *delim)
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw{
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw    char *s;
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw    const char *spanp;
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw    int c, sc;
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw    char *tok;
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw    if ((s = *stringp) == NULL)
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw        return (NULL);
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw    for (tok = s; ; ) {
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw        c = *s++;
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw        spanp = delim;
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw        do {
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw            if ((sc = *spanp++) == c) {
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw                if (c == 0)
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw                    s = NULL;
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw                else
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw                    s[-1] = 0;
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw                *stringp = s;
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw                return (tok);
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw            }
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw        } while (sc != 0);
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw    }
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw    /* NOTREACHED */
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw}