linux-imx

/*

 *   fs/cifs/cifsencrypt.c

 *

 *   Encryption and hashing operations relating to NTLM, NTLMv2.  See MS-NLMP

 *   for more detailed information

 *

 *   Copyright (C) International Business Machines  Corp., 2005,2013

 *   Author(s): Steve French (sfrench@us.ibm.com)

 *

 *   This library is free software; you can redistribute it and/or modify

 *   it under the terms of the GNU Lesser General Public License as published

 *   by the Free Software Foundation; either version 2.1 of the License, or

 *   (at your option) any later version.

 *

 *   This library is distributed in the hope that it will be useful,

 *   but WITHOUT ANY WARRANTY; without even the implied warranty of

 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See

 *   the GNU Lesser General Public License for more details.

 *

 *   You should have received a copy of the GNU Lesser General Public License

 *   along with this library; if not, write to the Free Software

 *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA

 */

​

#include <linux/fs.h>

#include <linux/slab.h>

#include "cifspdu.h"

#include "cifsglob.h"

#include "cifs_debug.h"

#include "cifs_unicode.h"

#include "cifsproto.h"

#include "ntlmssp.h"

#include <linux/ctype.h>

#include <linux/random.h>

#include <linux/highmem.h>

#include <crypto/skcipher.h>

#include <crypto/aead.h>

​

int __cifs_calc_signature(struct smb_rqst *rqst,

            struct TCP_Server_Info *server, char *signature,

            struct shash_desc *shash)

{

    int i;

    int rc;

    struct kvec *iov = rqst->rq_iov;

    int n_vec = rqst->rq_nvec;

    int is_smb2 = server->vals->header_preamble_size == 0;

​

    /* iov[0] is actual data and not the rfc1002 length for SMB2+ */

    if (is_smb2) {

        if (iov[0].iov_len <= 4)

            return -EIO;

        i = 0;

    } else {

        if (n_vec < 2 || iov[0].iov_len != 4)

            return -EIO;

        i = 1; /* skip rfc1002 length */

    }

​

    for (; i < n_vec; i++) {

        if (iov[i].iov_len == 0)

            continue;

        if (iov[i].iov_base == NULL) {